BREAKING: James Comer subpoenas DHS Secretary Alejandro Mayorkas in Hunter Biden tax probe

The committee wants testimony related to the Secret Service’s alleged tip-off of the Biden transition team of IRS plans to interview Hunter Biden and others connected to the case.

"The Department of Justice initiated the Biden family cover-up and now DHS and the leadership of Secretary Mayorkas is complicit in it," Comer told Fox News, adding that investigators were never able to interview Hunter Biden because Secret Service was tipped off.

A former FBI agent in July backed up previous statements from IRS whistleblowers that the FBI had notified Secret Service headquarters about the plan to interview Hunter Biden.

"As part of the criminal investigation into Hunter Biden, there were multiple witness interviews planned for December 8, 2020. IRS Supervisory Special Agent Gary Shapley and the former FBI supervisory special agent were assigned to interview Hunter Biden. On the evening of December 7, 2020, Shapley and the FBI supervisory special agent learned that FBI headquarters had notified Secret Service headquarters about the planned interview with Hunter Biden. Additionally, they learned the Biden transition team was notified about the planned interview," the committee reported.

"This was not the original plan by the career agents, which frustrated their investigative efforts because people found out who didn’t need to know," they explained.

"On December 8, 2020, Shapley and the FBI supervisory special agent were notified they would not be allowed to approach Hunter Biden’s house and instead would have to wait near his residence until Hunter Biden contacted them. The former FBI supervisory special agent told committee investigators he had never been told to wait outside to be contacted by the subject of an investigation," the committee said. "As a result of these actions, Shapley and the former FBI supervisory special agent never interviewed Hunter Biden."

This is a breaking story and will be updated.