1) this change, just like ending prohibition, has to come from the people up. Not from the top down. As much as I love Obama, can you imagine the racial BS spewing forth from the ignorant Faux herd if a black man legalized weed. I guarantee you, he will only take action when there's no clear other alternative. I have hope that his administration might change course and do more looking the other way term two, but I'm realistic, too. I'm not going to be surprised if that doesn't happen and he continues to come down hard on the cannabis community.
2) This change will come only through sustained and repeated efforts by advocates. From an alternet article via NORML's blog today:
"Similar to alcohol prohibition, cannabis prohibition is a federal policy that largely relies on state and local enforcement. How did federal alcohol prohibition come to an end? Simple. When a sufficient number of states led by New York in 1923 (several other states, including Colorado, later followed) enacted legislation repealing the states alcohol prohibition laws. With states no longer doing the federal governments bidding to enforce an unpopular law, the Feds eventually had no choice but to abandon the policy altogether."
I guarantee the only way we'll legalize it is to make the contrary position untenable. This will happen, but it will take time and we need to keep up the fight and be patient towards this end. We need to continually pressure lawmakers, educate the misinformed, and keep advocating for true unbiased research until we achieve our goal of reversing the racist and immoral prohibition of this safe, healing plant.