Opponents of legalization warn that states are embarking on a risky experiment. But the sky over Colorado has not fallen, and prohibition has proved to be a complete failure. Itamp;rsquo;s time to bring the marijuana market out into the open and end the injustice of arrests and convictions that have devastated communities. Careful regulation of the drug could very well make it safer to consume, and proper taxation could bring in new revenue for states. This year, from January through June, Colorado collected about $18.9 million. Ideally, the federal government would repeal the ban on marijuana, so states could set their own policies without worrying about the possibility of a crackdown on citizens violating federal law. Even though a majority of Americans favor legalization, Congress shows no sign of budging. So itamp;rsquo;s better for the states to take the lead than to wait for an epiphany on Capitol Hill that may never come. - The New York Times