House Republicans issued four subpoenas to Department of Justice and Internal Revenue Service personnel involved in the ongoing criminal investigation into Hunter Biden on Monday . The subpoenas target individuals involved in a key October meeting that IRS whistleblowers say exposed previously unknown roadblocks US Attorney David Weiss faced when trying to bring charges against Hunter Biden . IRS whistleblower Gary Shapley has testified to Congress that in the meeting Weiss said he was not the deciding person on whether charges were filed against Biden . Weiss appointment as special counsel could complicate congressional efforts to force compliance from prosecutors and investigators involved in ongoing criminal probe . The timing of this decision to appoint U.S. Attorney Weiss as a special counsel also comes after whistleblowers have raised serious and unchallenged allegations of impropriety in the investigation of Hunter Biden the letters say . House Republicans first sought voluntary cooperation with more than a dozen figures involved in Hunter Biden probe on June including the four individuals subpoenaed Monday . In their subpoena letters Republicans argue that the IRS and DOJ have not cooperated in making the individuals available for voluntary transcribed interviews with the individuals they requested to be transcribed interview . The letters say. In their letters House Republicans also raised questions about the timing of the decision to choose Weiss as an attorney General Merrick Garland. Weiss has told House Republicans that he has been granted him ultimate authority over this matter . In response to this decision. The timing to appoint him as a . Weiss has said Weiss has been given him. Weiss had offered to testify to House Republicans. The letters. In the letters. He has said he has said. He said he is not to be granted. He had offered. He is not necessarily to be denied. He was not to have. to explain why he was given. to speak to Congress