Stephen Colbert is ready to grill White House senior adviser Stephen Miller. And after some comments Miller made on the Sunday shows this weekend, Colbert thinks he might have his chance.

Miller spent his Sunday morning “defending the president’s super-crazy charges of voter fraud,” as Colbert put it. But while President Trump has claimed that he only lost New Hampshire because thousands of voters were bused in from neighboring Massachusetts, his senior adviser only “kinda, sorta” had the evidence to back that up.

Appearing on ABC News’ This Week on Sunday morning, Miller told host George Stephanopoulos his show was not the proper venue to lay out “all of the evidence.” Colbert shot back, “OK, how about some of the evidence? Maybe any of the evidence?”

Miller did suggest that Stephanopoulos speak to Kansas Secretary of State Kris Kobach, but when he appeared on CNN earlier on Monday, he was similarly unable to provide any evidence.

The Late Show host was most intrigued, however, by Miller’s vow to “go on any show, anywhere, anytime” to assert that Trump is “100 percent” correct in his baseless claims of widespread voter fraud.

“Any show, anytime, anywhere?” Colbert asked. “Great! How about the Late Show, tomorrow, at the Ed Sullivan Theater?”

To prove that Miller was up to the challenge, Colbert showed footage of him defending Trump’s bogus claims on The Big Bang Theory, The Walking Dead, and as Eleven on Stranger Things.