[caption id="attachment_9013" align="alignright" width="150"] Clayton Holton[/caption] On this date two years ago, Gov. Maggie Hassan signed HB 573, making New Hampshire the last state in New England to approve a medical marijuana law. Unfortunately, so far this law has failed to benefit patients in any way. Some patients, including well-known patient-advocate Clayton Holton, have passed away while waiting for the law to take effect. Others, such as Ron Mitchell, have had no choice but to leave their…