It depends on whether the misdeed for which he is being investigated happened before he got into office, she answered.
Colbert seemed to think she was saying Trump could not be indicted for Russian rannygazoo before being elected, and was disappointed.
“No, no; if you’re not president and you committed a crime, you should be able to be indicted,” Clinton corrected.
“Don’t clap yet!” Colbert told his audience when they began to show approval for her Clinton clarification. He seemed to want assurance Trump could be indicted for actions while in the White House.
That’ a tougher question, Clinton explained. The Constitution “has a specific remedy” for that, “which is impeachment,” she said.
A clearly agitated Colbert wanted to know if a sitting president could be subpoenaed in a criminal investigation.
“Yes – the Supreme Court has decided that,” Clinton answered pointedly.
“Okay – you don’t have to yell,” Colbert shot back, strangely, though it got a laugh.
On #LSSC tonight: "The Supreme Court has decided that" says Hillary Clinton when asked by Stephen Colbert if she believes a sitting president can be subpoenaed in a criminal investigation.
— The Late Show (@colbertlateshow) September 21, 2018