Impeaching President Donald Trump would be "wrenching" and not something that lawmakers should push for without hard evidence, Rep. Adam Schiff said Wednesday.
"We need to find out if that hard evidence exists, I think, before we lead to any conclusions," the California Democrat told MSNBC's "Morning Joe" program.
However, Schiff, who is the ranking Democrat in the House Intelligence Committee, said he is confident that Congress will acquire a memo former FBI Director James Comey reportedly wrote after meeting with Trump at the White House in February. He also believes Comey will come back and testify.
"What I'm pleased to see there's bipartisan support now to get to the bottom of this," said Comey. "You have Republican [Oversight] Committee Jason Chaffetz saying he wants the documents and is prepared to subpoena them. You have Republican chairmen like [Sen John] McCain and [Sen. Lindsey] Graham, who has already extended an invitation to Director Comey to testify."
In addition, former National Security Agency Director Michael Flynn could receive a subpoena to testify, said Schiff.
"We're not going to want to take any steps to impede what the Justice Department may be looking at or deciding to do in terms of whether prosecution is warranted," said Schiff. "We're also going to want to find out can we get the information we need in any other means."
The lawmaker said that if he could ask Trump one factual question, he would ask him what he would tell Comey and why, but the problem is, "we can't rely on the president's answers or representations made by his staff, because they're contracted within 24 hours of making the statement."