Steve Groves, the White House deputy press secretary was asked about the claims on Friday on MSNBC and responded that because Mueller’s letter was private, Barr might have opted not to reveal it on national television (thus making it okay to feign ignorance). “The idea that he would be called a liar or accused of perjury is just so outrageous that I don’t even know how to react to it,” he said.

“The fact that the speaker would take it upon herself to call him a liar is really, really inappropriate and beneath her office,” Groves continued.

But Groves apparently does not share the same concern about his own boss, who happens to be the president, calling others liars.

Throughout his 2016 campaign, Trump repeatedly called his opponents liars, often attacking then-presidential candidate Sen. Ted Cruz (R-TX) as “Lying Ted.” He also levied similar charges against Sen. Bernie Sanders (I-VT), former Secretary of State Hillary Clinton (D), and others.

As president, he has not shied away from calling his opponents, critics, former employees, his own Justice Department, and anyone else who upset him liars.