SUBSTANCE ABUSE

now Trump is opposed to legalization. "I say it's bad," he told the crowd at the Conservative Political Action Conference in June, in response to a question about Colorado's legal weed. "Medical marijuana is another thing, but I think [recreational marijuana] it's bad. And I feel strongly about that." But what about states' rights? "If they vote for it, they vote for it. But they've got a lot of problems going on right now, in Colorado. Some big problems. But I think medical marijuana, 100 percent."

"We're not just now 'discovering' this problem. But we should be saying enough is enough. It's time we recognize as a nation that for too long, we have had a quiet epidemic on our hands. Plain and simple, drug and alcohol addiction is a disease, not a moral failing -- and we must treat it as such."

"This is an absolute epidemic. We need leadership to solve it. Solving it has to occur at the state and local level with programs like A.A., and counseling, and churches and charities. But it also has to be securing the borders, because you have got Mexican cartels that are smuggling vast amounts of heroin into this country."

Bernie Sanders believes the United States' current "war on drugs" is a failed policy. He recognizes that the war on drugs has not quelled the drug-use epidemics facing the nation. Instead, he advocates treatment for drug addiction, not punishment -- and he's repeatedly introduced legislation to extensively reform the criminal justice system along these lines. He supports medical marijuana and the decriminalization of recreational marijuana, and has said that he supports the right of states to opt for full legalization.

"This disease knows no bounds, knows no income, knows no neighborhood, it's everywhere. And sometimes I wonder how African-Americans must have felt when drugs were awash in their community and nobody watched. Now it's in our communities, and now all of a sudden we've got forums, and God bless us, but think about the struggles that other people had."