Last week, we had Second Amendment scholar David Kopel on to discuss the big picture of the upcoming Supreme Court term. The week before that, we had gun-rights lawyer Alan Beck on the show to discuss his Supreme Court case, Wolford v. Lopez.  Now, we're looking at the other Second Amendment case with a man who has followed the issue at its center: Reason Magazine's Jacob Sullum.

That issue? Marijuana users possessing firearms.

Sullum explained that the federal ban on drug users owning guns potentially impacts millions of Americans. He noted it is rarely actually enforced, but he said the possibility hangs over people in nearly 40 states. He argued that's why Hemani's case could have huge implications nationwide.

However, he noted Hemani's case is more complicated than a straightforward weed and guns prosecution. Even though the charge is only related to Hemani's marijuana use, Sullum said the government has accused him of much worse--including terror-related crimes. He said the crossover between drugs and guns could scramble the usual dynamics of the Court, but that's no guarantee.

Special Guest: Jacob Sullum.