A week after the second GOP debate, Texas senator and Republican presidential candidate Ted Cruz stopped by "The Late Show with Stephen Colbert" and discussed his candidacy. The senator was booed by Colbert's audience during a conversation about marriage equality in the United States.

In the discussion, Cruz explained his conservative values to the former host of "The Colbert Report" and said he did not believe in gay marriage. 

"What I'm fighting for are simple principles: live within our means, stop bankrupting our kids and grandkids, and follow the constitution," Cruz said.

"And no gay marriage?" Colbert asked Cruz.

"Under the Constitution, marriage is a question for the states," Cruz replied.

Colbert then told Cruz that marriage was never mentioned in the Constitution.

"And that's exactly why it's a question for the states," Cruz said. "Because the 10th amendment says if it doesn't mention it, it's a question for the states. That's in the Bill of Rights. Everything that is not mentioned is left to the states. So, if you want to change the marriage laws."

Cruz was cut off by boos from Colbert's audience, something the host was not going to allow.

"Guys, however you feel, he's my guest, so please don't boo him," Colbert said to the audience before he asked Cruz to finish his point.

Cruz was the third presidential candidate to stop by "The Late Show with Stephen Colbert" since the show permiered on Sept. 8, reported Yahoo! Politics.

Check out the interview complete with boos below.