Stephen Colbert started Tuesday's Late Show with the big news about Special Counsel Robert Mueller's Russia investigation, using a Keebler elf to imagine Attorney General Jeff Sessions' just-confirmed testimony. "This is huge, because it is the first time investigators have interviewed a member of Trump's Cabinet," Colbert noted. "Probably not the last." He made some jokes about former FBI Director James Comey's testimony to Mueller, and pointed to breaking news that Mueller wants to interview Trump ASAP. "This could be very bad for Trump, especially if Mueller doesn't take the $130,000 in hush money," Colbert joked, acting out why Trump's lawyers are nervous about letting Trump go under oath. Democrats pretty clearly lost the government shutdown, thanks in part to the White House's brilliant "keep Trump contained" strategy, Colbert said, nevertheless pointing out some pitfalls of letting Trump watch the action play out on TV.