Stewart independently controls the Super PAC that supports Colbert in his run for president. But Colbert — like Mitt Romney, Newt Gingrich, and countless others who say they have no control over their Super PACs — can't directly coordinate with the head of his Super PAC about how its money should be spent.
Also read: Jon Stewart Skewers Foxconn, Builder for Apple, Amazon, and XBox
Colbert can, however, go on TV to express his opinions about PAC ads — as long as he doesn't speak to Stewart directly. He can also talk to a third party, while sitting with his head pressed into Stewart's. Which is exactly what they did on Tuesday's "The Daily Show."
Watch democracy in action: