Sen. Christopher CoonsChris Andrew CoonsGlasgow summit raises stakes for Biden deal Manchin threatens 'zero' spending in blowup with Sanders: reports Defense & National Security — Military starts giving guidance on COVID-19 vaccine refusals MORE (D-Del.) on Thursday said that Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellBiden says he's open to altering, eliminating filibuster to advance voting rights Pelosi says GOP senators 'voted to aid and abet' voter suppression for blocking revised elections bill Manchin insists he hasn't threatened to leave Democrats MORE (R-Ky.) is running interference for President TrumpDonald TrumpGrant Woods, longtime friend of McCain and former Arizona AG, dies at 67 Super PACs release ad campaign hitting Vance over past comments on Trump Glasgow summit raises stakes for Biden deal MORE on a bill that would protect special counsel Robert MuellerRobert (Bob) MuellerSenate Democrats urge Garland not to fight court order to release Trump obstruction memo Why a special counsel is guaranteed if Biden chooses Yates, Cuomo or Jones as AG Barr taps attorney investigating Russia probe origins as special counsel MORE's Russia probe.
In an appearance on CNN, Coons said "yes" when he was asked if McConnell blocking a vote on a bill to protect Mueller was to run interference for Trump.
"Yes," the Delaware senator said. "I see no other justification for refusing to bring forward such a simple bipartisan bill that takes existing Department of Justice regulations and strengthens them by putting them in statute."
The bill would codify regulations that say only a senior Justice Department official could fire the special counsel.
It would also create a 10-day review period during which time a judge would decide if a special counsel’s termination was justified.
McConnell blocked the bill Wednesday.
He did not explain the decision, but it came hours after he told reporters that he thought Mueller was likely to finish the investigation uninhibited.
"There's been no indication ... that the Mueller investigation will not be allowed to finish, and it should be allowed to finish," McConnell told reporters during a press conference. "We know how the president feels about the Mueller investigation but he's never said he wants to shut it down."
When asked for comment on Coons's statements Thursday, McConnell's office pointed The Hill to those statements he made to reporters Wednesday.
Mueller is investigating Russia's election interference in 2016 and possible collusion between President Trump's campaign and the Kremlin.
The bill was co-authored by Sens. Lindsey GrahamLindsey Olin GrahamPennsylvania Republican becomes latest COVID-19 breakthrough case in Congress McCain: Ivanka Trump, Jared Kushner had 'no goddamn business' attending father's funeral Mayorkas tests positive for COVID-19 breakthrough case MORE (R-S.C.), Thom TillisThomas (Thom) Roland TillisSenate GOP signals they'll help bail out Biden's Fed chair GOP rallies around Manchin, Sinema Advocates frustrated by shrinking legal migration under Biden MORE (R-N.C.) and Cory BookerCory BookerSenate Democrats call for diversity among new Federal Reserve Bank presidents Progressives push back on decision to shrink Biden's paid family leave program Emanuel to take hot seat in Senate confirmation hearing MORE (D-N.J.), and passed the Judiciary Committee in April.
Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeFlake donating unused campaign funds to Arizona nonprofit focused on elections: report Biden nominates former Sen. Tom Udall as New Zealand ambassador Biden to nominate Jane Hartley as UK ambassador: report MORE (R-Ariz.) on Wednesday said that he will oppose any of Trump's judicial nominees until the bill goes to vote.
Reports have indicated that Mueller is close to finishing his report for the Russia probe.
The issue has become more heated with Trump's appointment of Matthew Whitaker to be acting attorney general. Whitaker has publicly criticized the Russia investigation.
In his position, Whitaker theoretically has the power to hamper the probe, which Democrats say he is liable to do.
Coons told CNN Thursday that he has seen no signs that Whitaker has done so, but added that any evidence would emerge after it was too late to do anything.
"No, but I wouldn't see that evidence until it was too late," Coons said when asked if any indications had appeared of Whitaker's interference.
"His actions to deny requests for subpoenas or more funding or for an expanded scope, would not be public and would not be reported to the Judicial Committee or the general public unless someone leaked them."
"And if there's one thing that Robert Mueller's investigation has been well known for it's ... that his team has had virtually no leaks in the time that they have been running the investigation."
--Updated at 10:18 a.m.