President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE on Friday questioned whether House Judiciary Committee Chairman Jerrold Nadler Jerrold (Jerry) Lewis NadlerDemocrats shoot down talk of expanding Supreme Court Schumer: 'Nothing is off the table' if GOP moves forward with Ginsburg replacement Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence MORE (D-N.Y.) would investigate former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE's "acid washed" emails amid an expansive probe into the president himself.

"Will Jerry Nadler Jerrold (Jerry) Lewis NadlerDemocrats shoot down talk of expanding Supreme Court Schumer: 'Nothing is off the table' if GOP moves forward with Ginsburg replacement Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence MORE ever look into the fact that Crooked Hillary deleted and acid washed 33,000 emails AFTER getting a most powerful demand notice for them from Congress?" he wrote.

Will Jerry Nadler ever look into the fact that Crooked Hillary deleted and acid washed 33,000 emails AFTER getting a most powerful demand notice for them from Congress? — Donald J. Trump (@realDonaldTrump) May 17, 2019

Trump and his supporters during the 2016 campaign frequently lamented Clinton's use of a private email server during her time as secretary of State.

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Nadler's Judiciary panel launched a wide-ranging probe into Trump's family and administration in March. The inquiry will focus on possible obstruction of justice, public corruption and abuses of power.

Nadler on Thursday also pushed back on White House demands that he terminate investigations into the administration related to the Mueller report.

"As a threshold matter, your failure to comprehend the gravity of the Special Counsel’s findings is astounding and dangerous," he wrote to White House counsel Pat Cipollone on Thursday. "The Mueller Report found that Russia interfered in our elections and outlined our nation’s acute vulnerability to another attack. The Special Counsel also found that the President engaged in multiple acts to exert undue influence over law enforcement investigations."

A trio of GOP senators in April called for Attorney General William Barr Bill BarrHarris faces pivotal moment with Supreme Court battle Hillicon Valley: DOJ proposes tech liability shield reform to Congress | Treasury sanctions individuals, groups tied to Russian malign influence activities | House Republican introduces bill to set standards for self-driving cars McCarthy threatens motion to oust Pelosi if she moves forward with impeachment MORE to release information on the handling of the investigation into Clinton's email use.