The idea of decriminalizing marijuana is gaining steam. http://tierneylab.blogs.nytimes.com/2009/02/23/latin-americans-decry-us-drug-war/ Latin Americans Decry U.S. Drug War By John Tierney A group of Latin American leaders have called on President Obama to rethink America’s campaign against illegal drugs, which they blame for helping to foment crime, corruption and political instability in…