Senators express concern over Trump campaign's contact with Russia

Senators from both sides of the aisle are expressing concerns.

— -- Senators from both sides of the aisle are expressing concern over reports that Donald Trump's campaign had contact with potential Russian operatives -- arguing this is further proof why thorough investigations are necessary.

White House press secretary Sean Spicer was asked by ABC News' Jonathan Karl during Tuesday's press briefing if Trump's campaign, including former national security adviser Lt. Gen. Mike Flynn, had any contact with Russia.

"I don’t have any -- there’s nothing that would conclude me that anything different has changed with respect to that time period," Spicer said.

"Really? That's interesting," McCain said, smiling. "The fact is this is a very serious issue and I think most Americans appreciate that."

"There’s nothing in the story this morning that is surprising to me, I think especially since the assessment came out in January," Kaine said. He later added Flynn's resignation "makes it virtually impossible now for the administration or the GOP in Congress to stop the investigation or sweep it under the rug."

Asked whether he thought these contacts affected the outcome of the election, Kaine said, "Let’s get to the bottom of it, answer all the questions and then we’ll know that."

Several senators, including Sens. Jeff Flake, R-Ariz., and McCain, expressed concern about the state of affairs at the White House. Faced with questions about whether President Trump could overcome the turmoil, several Republican senators wouldn't give a clear answer, instead saying it's something the president must work on.