WATCH: Dems say Trump will look like he has something to hide if he avoids Mueller interview

Democratic senators say that if President Trump doesn’t agree to an interview with special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE, it will look like he’s trying to hide something.

“If the president fails to appear for the interview it’s an indication that he has something to hide,” Sen. Richard Blumenthal (D-Conn.) said Tuesday.

Sen. Ron WydenRonald (Ron) Lee WydenDems launch pressure campaign over migrant families Senators urge DOJ to probe whether Russians posed as Islamic extremist hackers to harass US military families Dems say new emails show Cohen ‘selling access’ to White House MORE (D-Ore.) echoed his colleague. “I think the American people are going to ask, what is he hiding?” he said.

“Using [President Trump’s] own words, if you have nothing to hide, if you are innocent, then you should answer questions, sit down and answer questions,” Sen. Cory BookerCory Anthony BookerThe Hill's Morning Report — Trump readies for Putin summit: 'He’s not my enemy’ Booker seizes on Kavanaugh confirmation fight Dem senator: Kavanaugh would 'turn back the clock' on women's health care MORE (D-N.J.) added.

Blumenthal also said if Trump refuses to interview with Mueller, he should be subpoenaed.

GOP Sen. John KennedyJohn Neely KennedyMORE (La.) questioned whether that’s possible.

“I don't know whether he can be subpoenaed or what. I mean, you have the right in America not to testify, all things being equal; it's called the Fifth Amendment,” Kennedy said.

The senators spoke after The New York Times reported that some Trump advisers are suggesting he not interview with Mueller.

Watch the video above to hear the senators in their own words.