Uruguay and its President, Jose Mujica, have been making headlines recently for legislation to regulate the marijuana market. President Mujica has been determined to pass the law, supporting the movement throughout the legislative process and defending the policy to opponents both in his own country and abroad. Now that the law has passed, Uruguay is facing pressure from the U.N., which accuses the legislature of violating an international convention. The Single Convention on Narcotic Drugs of 1961…