Sen. Mark Warner Mark Robert WarnerIntelligence chief says Congress will get some in-person election security briefings Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House approves bill to secure internet-connected federal devices against cyber threats MORE (D-Va.) said Sunday that it’s “a little unbelievable,” that neither Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE nor Jared Kushner Jared Corey KushnerAbraham Accords: New hope for peace in Middle East Tenants in Kushner building file lawsuit alleging dangerous living conditions Trump hosts Israel, UAE, Bahrain for historic signing MORE told President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE about their meeting with a Russian lawyer during the 2016 campaign.

“It’s a little unbelievable that neither the son nor the son-in-law ever shared that information with their dad, the candidate,” Warner, the ranking Democrat on the Senate Intelligence Committee, told CNN’s “State of the Union.”

ADVERTISEMENT

The president has denied knowing about his son and son-in-law's meeting with the Russian lawyer, which was also attended by his then-campaign chairman Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE, while the president’s lawyer has maintained that Trump was not engaged in the meeting.

Warner, whose committee is leading the Senate’s probe into Russia’s election meddling, said the credibility level of White House officials is “suspect.”

“The level of credibility from the senior levels of this administration really is suspect, and I think suspect regardless of what political party you belong to,” Warner said.

The Virginia Democrat also said he would like to hear from all of the individuals who reportedly took part in the meeting last year.

“I would like to hear from all of these individuals,” Warner said. “Whether we’ll be able to get the Russian nationals to come over to testify is an open question.”

During an appearance on NBC's "Meet the Press," Warner emphasized the significance of the Trump Jr. meeting as it pertains to "all that's happened."

“And so all of these denials from the president himself, to Donald Trump Jr., to Paul Manafort, all these denials were clearly false because they knew about this effort and they failed to reveal it," Warner said.

“So far all the Trump officials have conveniently forgot about any meetings with Russians until they see evidence of it,” Warner added.

--This report was updated at 10:53 a.m.