House Republicans demand answers from special counsel's top deputy in the Justice Department's criminal probe of Hunter Biden

GOP House Judiciary Chairman Jim Jordan formally subpoenaed Assistant U.S. Attorney Lesley Wolf to appear before lawmakers on Dec. 7 .

Wolf 's "critical role” in the DOJ investigation of Hunter Biden is central to the House Judiciary Committee’s oversight and potential legislative reforms, Jordan wrote in a letter.

Hunter Biden struck a plea deal with federal prosecutors in June that watered down his years of criminal behavior to two misdemeanor tax crimes and a felony firearm charge.

Grassley wrote to the Delaware U.S. Attorney’s office on October 23, 2020 .

Grassley asked the DOJ to investigate the allegations of a bribery scheme involving then-Vice President Biden and Hunter Biden .

Grassley 's office told The Federalist Tuesday that the DOJ ignored the senator's inquiry.