you should take some political science classes.
The reason it wont happen is because we are somehow have allowed this country to be run by capitalism instead of democracy.
In all actuality, we arent even a democracy, we are a republic who strives for democracy. Meaning that we supposedly elect people to make decisions for us based on whats right for us, or ahem..........what we want.
In reality, what we want is not on the agenda. Its more about money, and pandering for power. The group of MJ smokers is not enough of a segment of the population,it very well could be if they outed themselves all at once but many fear reprocussions.
This is a no brainer, we have a few congressmen and or other political figures who know its bullshit and are willing to make a smart decision. We have some others who are pandering for some political steam, you know orginizations like NORML donate money to these politicians and lobby others.
Anyways, I wouldnt hold your breath, we will need the majority of the states to adopt a medicinal law that starts to go smoothly and then and only then will it possibly be voted in federaly. I seriously wouldnt expect it to go further than that. There is too much money involved for the gov when it comes to budgets to not have a war on it.
Remember, dont spend it all, dont get it all. They arent working to spend less, they are working to spend more.