Earlier this week, Gov. Arnold Schwarzenegger (R-Calif.) launched MyIdea4CA.com, a website which encourages Twitter users to “tweet” their ideas for how to “move California forward” and then allows visitors to give each of those ideas an up or down vote. The site has only been live for a few days and already the top three most popular “tweets” involve making marijuana legal, taxed, and regulated in California.

It is encouraging that high-level pols like Gov. Schwarzenegger and President Obama are turning to the Web for new, out-of-the-box ideas but it’s a shame that they have yet to embrace the one proposal which is consistently the most popular.

Nevertheless, those of us yearning for an effective and just marijuana policy will continue to speak truth to power – and it’s only a matter of time before our elected leaders will be forced to listen.

The Obama administration’s official position on the movement to decriminalize drug use in Latin America is to take a “wait-and-see attitude.” However, San Diego Police Chief William Lansdowne was willing to share his thoughts with the Associated Press:

"Now they will go [to Mexico] because they can get drugs. For a country that has experienced thousands of deaths from warring drug cartels for many years, it defies logic why they would pass a law that will clearly encourage drug use."

His quote illustrates one of the most baffling positions held by drug prohibitionists … that sending people to treatment instead of jail encourages drug use.

The logic Lansdowne can’t see is that drug use is not a criminal justice problem; it’s a public health problem. And when viewed in that light, it’s understandable why he got it wrong -- Lansdowne isn’t a doctor; he's a cop.

The impetus behind Mexico, Argentina, Switzerland, and Portugal (likely to be joined soon by Brazil and Ecuador) changing their drug laws is a decision to focus on treating addiction rather than punishing it. In doing so, they hope to free up law enforcement resources that are better spent fighting violent criminals (like the drug cartels in Mexico). Portugal, which changed its policy in 2001, has had great success -- and without becoming a destination for drug tourism.

Argentina is expected to remove criminal penalties for marijuana possession today, according to the Buenos Aires Herald:

Supreme Court Justice Carlos Fayt said the court has reached a unanimous position on an expected ruling that would decriminalize the possession of drugs for personal consumption, which would be announced analyzed today.

If the court rules as expected, Argentina will become the second Latin American country in the last four days to allow the personal use of marijuana.

Last week, Mexico passed a new law decriminalizing simple possession of marijuana and other drugs. Perhaps our neighbor to the south will now consider the possibility of full legalization (regulating marijuana like alcohol, as opposed to simply removing penalties for possession). A number of people in Mexico are calling for a debate, with  former President Vicente Fox as one of the most prominent voices in that chorus. However, others are wondering if legalization in Mexico would make a difference. The answer, as I see it, is unfortunately no.

The World Health Organization’s 2008 report on drug use found that more Americans use marijuana than people in any of the other 16 countries studied (which included Mexico). The report, along with many other sources, concludes that America is the largest illicit drug market in the world. The cartels in Mexico cater almost exclusively to customers in the U.S., pulling in huge profits every year (70% of which are from marijuana sales). If Mexico were to legalize marijuana, the cartels’ business would continue as usual. They would still smuggle marijuana into the U.S. and continue to profit from doing so.

No, the answer to the cartel problem does not lie in Mexico; it lies here in the U.S.

The U.S. alone has the power to wipe out the cartels, and it can do so with a simple change in policy. Were we to abolish marijuana prohibition and replace it with a system of taxation and regulation based on alcohol laws, a new, legal marijuana industry would put the criminal competition out of business overnight. We did it once before. In the 1930s, following our failed experiment with alcohol prohibition, the fledgling alcohol industry took over, producing a safer product and putting money into the economy rather than taking it out. And it happened without the moral degradation prohibitionists predicted.

This is precisely why the Latin American Commission on Drugs and Democracy released a report in January calling on the U.S. to change its marijuana laws. Drug producing countries in Latin America have first-hand experience with the devastating effects of America’s war on drugs. The violence and organized crime feeding the U.S. market have been rooted there for decades, with disastrous results. The U.S., on the other hand, has never faced these realities on its own soil – not to the same scale and severity as our neighbors in Mexico or those who lived through the reign of Pablo Escobar in Columbia.

But that is beginning to change. Violence in Mexico is spilling over into Texas, Arizona, and southern California. The cartels now operate in 230 American cities – think about what that means. 230 means more than New York, Los Angeles, and other large metropolitan areas, it means Bismark, N.D., Wichita, Kan., and even Kalamazoo, Mich., small towns where Americans are feeling the impact of bad drug policy. More directly, it means that the U.S. government can no longer ignore the failures of its war on marijuana.

The sensible solution is right in front of us. We just need the political will to see it through.

If you’d like to help make a change, write your member of Congress and ask him or her to support marijuana policy reform. More information on how to do so can be found at mpp.org/federal-action.

A study just published online by the journal Neurotoxicology and Teratology suggests that marijuana may protect the brain from some of the damage caused by binge drinking.

The study, by researchers at the University of California San Diego, used a type of high-tech scan called diffusion tensor imaging to compare microscopic changes in brain white matter. The subjects were students aged 16-to-19, divided into three groups: binge drinkers (defined as having five or more drinks at one sitting for boys or four or more for girls), binge drinkers who also smoked marijuana, and a control group who had very little or no experience with either alcohol or drugs.

As expected, the binge-drinking-only group showed evidence of white matter damage in eight regions examined, as demonstrated by lower fractional anisotropy (FA) scores. But in a finding the researchers described as “unexpected,” the binge-drinking/marijuana group had lower FA scores than the controls in only three of the eight regions, and in seven regions the binge-drinking/marijuana group had higher scores – indicating less damage – than the binge drinkers who didn’t use marijuana (unfortunately, not all of these stats are in the summary linked above; access to the full article requires payment).

Brain white matter tracts were “more coherent in adolescents who binge drink and use marijuana than in adolescents who report only binge drinking,” the researchers wrote. “It is possible that marijuana may have some neuroprotective properties in mitigating alcohol-related oxidative stress or excitotoxic cell death.” The scientists noted that such protection has already been shown in lab and animal studies.

Indeed, the U.S. government has a patent on cannabinoids as neuroprotectants. Yes, the same government that wants you to believe that marijuana will rot your brain knows that its active components protect brain and nerve cells from many kinds of damage.

In a statement issued by MPP today, director of state campaigns Steve Fox said, “This study suggests that not only is marijuana safer than alcohol, it may actually protect against some of the damage that booze causes. It’s far better for teens not to drink or smoke marijuana, but our nation's leaders send a dangerous message by defending laws that encourage the use of alcohol over marijuana.”

Fox is co-author of the new book, “Marijuana Is Safer: So Why Are We Driving People to Drink?” The book is getting lots of favorable press coverage, and recently hit number 14 on the Amazon.com bestseller list.

Mexico enacted a law decriminalizing possession of marijuana (and other drugs) yesterday, according to the Associated Press.

The new law defines 5 grams of marijuana as a “personal use” amount. People caught in possession of less than that amount will face no penalty until their third offense, at which point the law requires them to enter addiction treatment. The change is part of the Mexican government’s efforts to fight a very hot war against drug cartels along its border with the U.S. By decriminalizing marijuana, Mexico seeks to free up law enforcement resources that have been wasted arresting non-violent marijuana users.

A similar law, proposed during former president Vicente Fox’s administration, was defeated following significant opposition from President George W. Bush. We have not seen the same pressure from the Obama administration this time around. In fact, current Mexican president Felipe Calderón has used this new law to send a message north about the need for a similar debate to take place on our side of the border. Mexican Ambassador Arturo Sarukhan, for example, called for such a debate to be taken seriously by the U.S. in April, and the Mexican Senate scheduled discussion of the new law to coincide with President Obama’s first trip to Mexico.

Taking these events in context -- especially considering the chorus of high-profile former Latin American leaders calling for the U.S. to change its heavy-handed drug policies -- a clear message emerges: our neighbors are paying a heavy price for our marijuana laws, which account for 70% of the cartels' profits.

In a sense, we’ve been exporting the worst consequences of prohibition to our southern neighbor by forcing marijuana to remain a business for thugs and criminals. Just like alcohol prohibition, marijuana prohibition causes more harm than the drug itself. The violence in Mexico has forced its government to face that reality; our politicians should pay close attention.

H.R. 2943, legislation in Congress that seeks to remove federal penalties for marijuana possession, is currently in committee. Please visit mpp.org/federal-action to ask your member of Congress for his or her support.

MPP's director of state campaigns, Steve Fox, is the co-author of a new book entitled, Marijuana is Safer: So why are we driving people to drink? The purpose of this book is to educate Americans about the relative harms of marijuana and alcohol, and to force them to consider why we punish adults who use the less harmful substance.  The critically acclaimed book also provides supporters of marijuana policy reform with the information and talking points necessary to spread the "marijuana is safer" message to friends and family.

To raise awareness about the book, the authors are coordinating a "Book Bomb" that will take place tomorrow, August 20.  The goal is to have hundreds of people order the book from Amazon.com on the same day so that it reaches #1 on the online bookseller's rankings.  As far as we know, no book advocating for marijuana policy reform has reached that milestone.  To learn more about the book and to sign up for the Book Bomb, visit http://www.marijuanabookbomb.com If you sign up, you will get an email tomorrow reminding you about the Bomb.

Thanks in advance for participating!  And please share this blog post with any friends who might be interested.

Among the more interesting pieces of news that came out while I was on vacation the first half of August was a new study in the journal Cancer Prevention Research, which found that marijuana smokers have a lower risk of head and neck cancers than people who don't smoke marijuana. Alas, this important research has been largely ignored by the news media.

While this type of study cannot conclusively prove cause and effect, the combination of this new study and existing research -- which for decades has shown that cannabinoids are fairly potent anticancer drugs -- raises a significant possibility that marijuana use is in fact protective against certain types of cancer.

A team of researchers from several major universities conducted what is known as a "case-control" study, comparing patients who had squamous cell carcinoma of the mouth, larynx, and pharynx with control patients matched for age, gender, and residence location who did not have cancer. By looking at matched groups with and without cancer, researchers hope to find patterns indicating risk or protective factors. In this case they focused on marijuana use, but also took into account known risk factors for this type of cancer, including tobacco and alcohol use.

After adjusting for those confounding factors, current marijuana users had a 48% reduced risk of head and neck cancer, and the reduction was statistically significant. Former users also had a lower risk, though it fell short of being significant. The investigators crunched the numbers several different ways -- for example, by amount of marijuana used or the frequency of use -- and the findings stayed the same nearly across the board, with moderate users showing the strongest and most consistent reduction in cancer risk.

The scientists write, "We found that moderate marijuana use was significantly associated with reduced risk HNSCC [head and neck squamous cell carcinoma]. The association was consistent across different measures of marijuana use (marijuana use status, duration, and frequency of use)."

Strikingly, among drinkers and cigarette smokers, those who also used marijuana reduced their cancer risk compared to those who only drank and smoked cigarettes. So marijuana may actually have been countering the known bad effects of booze and cigarettes.

This is important, and by any reasonable standard, it's news. But this afternoon, a Google News search for coverage of this study produced a grand total of nine hits. None of these -- none -- was from a major newspaper, wire service, or TV network.

A huge wildfire ablaze in  Santa Barbara County over the last week has been linked to a clandestine marijuana grow operation in the Los Padres National Forest. As we often point out, prohibition is to blame for these destructive illegal gardens because it leaves this popular agricultural product in the hands of criminals with no regard for the environment instead of legitimate farmers.

Orange County Register columnist and author of "Waiting to Inhale, the Politics of Medical Marijuana" Alan Bock writes in his blog post that the proliferation of these sites on public lands is a result of misguided asset forfeiture laws:

So it’s not surprising that faced with the loss of property whether a crime was proved against them or not  or charges were even filed, marijuana growers began to use land that they didn’t own and couldn’t be seized. The best bet was not some poor innocent’s land, but government land, of which there is more than an abundance in the western states, which couldn’t be forfeited because the government already owns it. So the national forests became the preferred venues for large marijuana grows, the forests were in some cases degraded and became less useful to the public they were supposed to benefit — and now we have a major wildfire allegedly started by marijuana growers.

To their great credit, the editors at Forbes.com offered us the opportunity to respond today to last week's absurd column by Rachel Ehrenfeld. Enjoy.