More than 400 former federal prosecutors across Republican and Democratic administrations issued a statement Monday saying President Donald Trump would face an obstruction of justice charge were he not the sitting U.S. president.

The former prosecutors, many of whom hold posts in Big Law now as white-collar defenders, argued that Special Counsel Robert Mueller III presented sufficient evidence supporting an obstruction charge against Trump. The statement counters the conclusion by U.S. Attorney General William Barr that the evidence did not support an obstruction charge.

“Each of us believes that the conduct of President Trump described in Special Counsel Robert Mueller's report would, in the case of any other person not covered by the Office of Legal Counsel policy against indicting a sitting president, result in multiple felony charges for obstruction of justice,” the former prosecutors wrote in the letter, posted to the site Medium.

One signatory from Georgia is Wilmer “Buddy” Parker of Maloy Parker Jenkins. He served during the administrations of Presidents Jimmy Carter, Ronald Reagan, George H.W. Bush and Bill Clinton, rising to chief of narcotics for the Atlanta U.S. attorney's office and lead on the organized crime drug enforcement task force.

Sally Yates of King & Spalding, who was deputy attorney general in the final years of the Barack Obama administration, did not sign the statement. But she said on NBC's “Meet the Press” last month, “ I've been a prosecutor for nearly 30 years. And I can tell you, I've personally prosecuted obstruction cases on far, far less evidence than this. And yes, I believe, if he were not the president of the United States, he would likely be indicted on obstruction.” (Yates served as acting attorney general in the first days of Trump's administration, but he fired her when she refused to defend the first version of his travel ban against people from many Muslim countries.)

Many of the signatories now hold partner positions at Big Law firms. Signatories included Robert Weiner of Arnold & Porter, a former associate deputy attorney general; Robin Linsenmayer, of counsel at Orrick, Herrington & Sutcliffe, who was an assistant U.S. attorney in the Southern District of New York; Lorin Reisner, a Paul, Weiss, Rifkind, Wharton & Garrison partner who was a chief of the criminal division in the Southern District of New York; Sean Coffey, a Kramer Levin Naftalis & Frankel partner who was an assistant U.S. attorney in the Southern District of New York; Bradley Harsch, a special counsel at Sullivan & Cromwell and a former public-corruption prosecutor in New Jersey; Geoffrey Graber, a partner at Cohen Milstein Sellers & Toll and a former deputy associate attorney general; and Daniel Shallman, a Covington & Burling partner in Los Angeles and former assistant U.S. attorney.

Mueller did not make a recommendation on obstruction of justice, but his report laid out nearly a dozen instances of alleged obstructive conduct. Mueller's report pointed to a Justice Department policy, crafted by the Office of Legal Counsel, that says the prosecution of a sitting president is out of bounds. Mueller's report did not exonerate Trump, and Mueller said he would state whether Trump had not committed a crime.

Barr and his deputy, Rod Rosenstein, concluded, however, that the evidence Mueller marshaled did not amount to obstruction.

“Our determination was made without regard to, and is not based on, the constitutional considerations that surround the indictment and criminal prosecution of a sitting president,” Barr wrote in a March 24 letter to Congress. Defending the president, Barr later said at a press conference at Main Justice that Trump was “frustrated and angered by a sincere belief that the investigation was undermining his presidency.”

Mueller, according to the former prosecutors, presented evidence that Trump used his authority over others to try to “control and impede” the ongoing investigation of Russia interference in the 2016 election. That evidence included unsuccessfully pressuring then-Attorney General Jeff Sessions to reverse his decision to recuse; and the president's efforts to direct then-White House Counsel Donald McGahn to fire Mueller.

Attorney General Willam Barr testifies on May 1 before the Senate Judiciary Committee on the Mueller report. (Photo: Diego M. Radzinschi/ALM)

The former prosecutors said in their statement that “these are not matters of close professional judgment.” Defenses could be raised, the letter said, and “every accused person is presumed innocent and it is always the government's burden to prove its case beyond a reasonable doubt. But, to look at these facts and say that a prosecutor could not probably sustain a conviction for obstruction of justice — the standard set out in Principles of Federal Prosecution — runs counter to logic and our experience.”

Barr is facing pressure from U.S. House Democrats to release a full, unredacted copy of Mueller's report. The House Judiciary Committee is expected to move forward with a contempt vote Wednesday, potentially pushing the dispute to Washington's federal trial court.

Mueller, meanwhile, hasn't spoken about his work on the 448-page report. But a U.S. House Judiciary Committee member said Sunday the committee was trying to arrange a time for Mueller to testify.