Prominent conservative legal expert Jonathan Turley slammed the White House's arrogant response to a request for Joe Biden to testify about his family's sleazy business deals. 

White House lawyer Ian Sams dismissed a letter from Republican impeachment investigator James Comer (R-Ky.) by writing "LOL" and urging him to "call it a day, pal."

White House STONEWALLS

During a Fox News interview, Turley noted Biden's troubling tone toward a separate and co-equal branch of government.

"I can't remember an administration that had a White House counsel's office that engaged so directly in taunting and attacking legal inquiries from Congress....This is an impeachment inquiry," Turley said.

Biden spent years denying any involvement in his son's business deals, a claim that is no longer supportable in light of a large body of documentary evidence and eyewitness testimony proving that Biden spoke with his son Hunter Biden's associates and was perceived as a valuable connection.

The response from the Biden team is "shocking," Turley said, but the White House knows that the media is going to bury valid questions about Biden's conduct.

"They've bought into this illusion, essentially, that was created by the Biden team, and they've just gone too far," he said.

Biden's protectors double down

This is far from the first time that Biden's attorneys have behaved like mob lawyers.

Special Counsel Robert Hur told Congress last month that the White House tried to make changes to his report, which infuriated Democrats by describing Biden as an "elderly man with a poor memory."

But just as the media have ignored his mental decline, they have - as Turley noted - worked hand in glove to cover up the reek of corruption that surrounds him.

Despite considerable evidence that Biden engaged in questionable conduct - and proof that he already lied - the media, taking cues from the White House and Democrats, have shifted the burden of proof to declare Biden innocent of all wrongdoing absent a "smoking gun."

Republicans have argued that the family's finances are a complicated web with plenty of red flags that point to crimes like money laundering.

In any case, Republicans have given hints that they will back down from a politically risky impeachment that is all but destined to fail in the Democrat-run Senate.