California Sen. Dianne Feinstein wants the Senate Judiciary Committee to question Attorney General Jeff Sessions to start working toward answering questions about President Trump's conversations with James Comey and whether they constitute obstruction of justice.

The Democrat said Sunday on CNN that the Senate Intelligence Committee, which Sessions said he'd speak in front of on Tuesday, isn't made up of lawyers like the judiciary committee. In order to answer if Trump obstructed justice when he asked Comey to stop investigating former national security adviser Mike Flynn or "lift the cloud" of the Russia investigation, Feinstein said the judiciary committee must be the place to go.

When asked if Sessions will testify on Tuesday and whether it will be in public or closed session, Feinstein said, "Don't know whether it will happen, don't know whether it's going to be public."

"I believe that the judiciary committee has the oversight responsibility for the Justice Department and therefore it is very fitting for the attorney general to appear there," said Feinstein, who is a member of both the Senate Intelligence Committee and the Senate Judiciary Committee.

Feinstein said she hasn't made up her mind on whether she believes Trump interfered in investigations into his administration.

"I don't know whether it's obstruction of justice. I don't intend to draw any conclusions until investigations are finished," he said.

Trump and his lawyer have accused Comey of lying to Congress about the nature of Trump's conversations with him, including denying Trump ever demanded loyalty from Comey or that he asked him to end the investigation into Flynn.

Feinstein said given the choice between the two camps, she's going to believe Comey.

"In this kind of thing, he's not going to lie," she said. "It's just not in him to do this."