Three leading House Republican Committee chairs have joined forces to challenge the Department of Justice’ handling of Hunter Biden’s plea deal after the unusual court proceedings last month and new evidence showing the DOJ may have interfered with the investigation for political reasons.

House Judiciary Committee Chairman Jim Jordan, R-Ohio, House Oversight and Accountability Committee Chairman James Comer, R-Ky., and House Ways and Means Committee Chairman Jason Smith, R-Mo., lead the effort, sending a letter to the DOJ giving a deadline of Aug. 14 to provide information for the inquiry.

“The Department’s unusual plea and pretrial diversion agreements with Mr. Biden raise serious concerns—especially when combined with recent whistleblower allegations—that the Department has provided preferential treatment toward Mr. Biden in the course of its investigation and proposed resolution of his alleged criminal conduct,” the letter said.