While a small group of lawmakers have raised the possibility of impeaching President Trump over allegations he tried to extinguish an FBI investigation, there is little interest among Republicans or Democrats to ousting the president so far.

"All we know is a newspaper headline," said Sen. Dianne Feinstein, D-Calif., the top Democrat on the Senate Judiciary Committee. "Until we know much more, [impeachment] should remain where it is today. Off the table."

Feinstein is among the shrinking pool of lawmakers who participated in proceedings against President Bill Clinton, who was impeached by the House in December 1998.

"I've been through an impeachment hearing," Feinstein said. "And they are not good for the country, let alone the individual."

House Democrats declined to call for impeachment Wednesday at a news conference on Comey's allegations about Trump, although many are calling for an independent investigator.

"There needs to be a full investigation first," said House Democratic Conference Chairman Joe Crowley, D-N.Y. "We need to get to the facts and let the facts lead where they may, whatever that end result will be. First, establish the facts."

Senate Republicans and some Senate Democrats said they are satisfied with a bipartisan Senate probe the Intelligence Committee is conducting.

Among Republicans, Rep. Justin Amash, R-Mich., is so far the only one to say publicly that Trump may have committed an impeachable offense when he told Comey that he hoped the FBI would drop the Flynn investigation, after Flynn was ousted for failing to disclose pre-inaugural conversations about sanctions with Russian officials.

But Sen. John McCain, R-Ariz., who last night said Trump's swirling problems have reached "Watergate size and scale," said he has not even considered impeachment. "The thought has not crossed my mind," he said.

"Talking about impeachment is just way out of line because we don't know what the facts are," addedRep. Mario Diaz-Balart, R-Fla.

While some Democrats are seeing an outside commission or special prosecutor to investigate Trump, few Republicans support that idea, let alone impeachment.

Sen. Lisa Murkowski, R-Alaska, told reporters a special prosecutor may eventually be needed. But Sen. Tim Scott, R-S.C., said an independent investigator would not be as bipartisan as the Senate probe.

"I think ours is more independent and the Intelligence Committee has done a really good job so far in keeping it independent," Scott said.

The top Democrat on the Senate Intelligence Committee, Sen. Mark Warner, D-Va., said the panel has invited former FBI Director James Comey to testify "at an open or closed hearing" before the panel, which is probing the Comey firing and any connection between the Trump campaign and Russian operatives.

Warner said the panel is focused on information gathering, whether Trump was taping conversations with Comey, Trump's meeting with Russian operatives, and Comey's memo accusing Trump of trying to pressure him to drop an investigation into ex-national security adviser Mike Flynn.

"We don't lack for questions," Warner said. The main consensus, Warner said, is that lawmakers want to hear from Comey.

"I don't think I know any member I've talked to publicly or privately, Democrat or Republican, who doesn't think Jim Comey deserves a chance to tell his side of the story," Warner said.

Warner said the Senate Intelligence Committee probe is working "full steam ahead" on the investigation.

"There is broad based consensus the investigation is hitting its stride," Warner said. "What we have now is at least the potential of tapes, transcripts and memos. We want to see it all."

Sen. Richard Burr, R-N.C., who is chairman of the panel, said he has requested the Comey memo and anticipates Comey will testify voluntarily about the matter.