Senate Minority Leader Chuck Schumer (D-N.Y.) now favors legalized marijuana, but that's nothing compared to former House Speaker John Boehner (R-Ohio) jumping aboard the weed train, Stephen Colbert said on Monday's Late Show. "News like this is certain to have an effect on pot culture, so I figured I'd check in with two experts in the field," Cheech Marin and Tommy Chong. "So, gentlemen, marijuana has become mainstream now — that's great news, right?" Colbert asked.