President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE compared his impeachment inquiry to former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonBloomberg rolls out M ad buy to boost Biden in Florida Hillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Trump pledges to make Juneteenth a federal holiday, designate KKK a terrorist group in pitch to Black voters MORE's email scandal Saturday afternoon.

"So Crooked Hillary Clinton can delete and acid wash 33,000 emails AFTER getting a Subpoena from the United States Congress, but I can’t make one totally appropriate telephone call to the President of Ukraine? Witch Hunt!" Trump tweeted.

So Crooked Hillary Clinton can delete and acid wash 33,000 emails AFTER getting a Subpoena from the United States Congress, but I can’t make one totally appropriate telephone call to the President of Ukraine? Witch Hunt! — Donald J. Trump (@realDonaldTrump) October 5, 2019

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The phone call Trump referenced was the subject of the whistleblower complaint that was the catalyst for House Democrats launching an official impeachment inquiry two weeks ago.

On Friday, the House Oversight and Reform Committee subpoenaed the White House for documents concerning Trump's July 25 phone call with Ukrainian President Volodymyr Zelensky.

House panels also asked Vice President Pence to turn over all documents he had concerning the phone call.

Saturday afternoon's tweet continued Trump's busy day on Twitter.