Van Hollen on Russia probe: 'What is the White House afraid of?'

Sen. Chris Van HollenChristopher (Chris) Van HollenOvernight Defense: Trump to reverse North Korea sanctions imposed by Treasury | Move sparks confusion | White House says all ISIS territory in Syria retaken | US-backed forces report heavy fighting | Two US troops killed in Afghanistan The Hill's 12:30 Report: Manafort sentenced to total of 7.5 years in prison Hillicon Valley: Google takes heat at privacy hearing | 2020 Dems to debate 'monopoly power' | GOP rips net neutrality bill | Warren throws down gauntlet over big tech | New scrutiny for Trump over AT&T merger MORE (D-Md.) on Sunday urged the White House to let special counsel Robert Mueller complete his federal probe into Russia's election meddling, saying Republicans are making a "concerted effort" to undermine its credibility. 

"The question is what are they afraid of? What is the White House afraid of? Let's let [investigators] finish the job and get the facts," Van Hollen said on ABC News's "This Week."

ADVERTISEMENT

"I think Republicans should end their concerted effort to undermine the credibility of the Mueller investigation. You've got somebody who, by all accounts, who is an independent person, somebody who's got lots of integrity and you see a concerted effort out of the White House to undermine the investigation," he continued.

"I really hope our Republican colleagues will not join in subverting that process and trying to end this investigation," he said. 

Van Hollen's comments come as Republicans have pounced on the investigation after a series of text messages showing an anti-Trump bias from two FBI officials previously serving on Mueller's team surfaced from the 2016 presidential campaign. 

Republicans have accused the probe of having a bias against President TrumpDonald John TrumpHow to stand out in the crowd: Kirsten Gillibrand needs to find her niche Countdown clock is on for Mueller conclusions Omar: White supremacist attacks are rising because Trump publicly says 'Islam hates us' MORE.