EXCLUSIVE: House Oversight Committee Chairman James Comer subpoenaed Homeland Security Secretary Alejandro Mayorkas and several DHS and Secret Service officials for documents and testimony related to the Secret Service’s alleged tip-off of the Biden transition team regarding a planned Hunter Biden tax probe interview in 2020, while also accusing the agencies of obstructing a congressional investigation.

Fox News Digital exclusively obtained letters and the subpoenas sent to Mayorkas and Secret Service Director Kimberly Cheatle Tuesday.

Comer sent a total of six subpoenas Tuesday— one directed to Secretary Mayorkas for documents; and five for depositions—two to Secret Service officials and three to DHS officials.

Fox News Digital has obtained and reviewed the subpoenas.

“The Department of Justice initiated the Biden family coverup and now DHS under the leadership of Secretary Mayorkas is complicit in it,” Comer told Fox News Digital. “Investigators were never able to interview Hunter Biden during the criminal investigation because Secret Service headquarters and the Biden transition team were tipped off about the planned interview. This is just one of many examples of the misconduct and politicization during the Department of Justice’s investigation.”

Comer said the Oversight Committee – along with the Judiciary and Ways and Means Committees – is seeking interviews with key witnesses, including employees at the Secret Service.”

“The Department of Homeland Security is obstructing our investigation by muzzling the Secret Service from providing a response to Congress,” he explained. “The American people deserve transparency, not obstruction.”

Comer subpoenaed the director of oversight for DHS’ Office of Legislative Affairs, K. Shiek Pal, to testify before the committee; along with assistant secretary to OLA Zephranie Buetow; and DHS senior advisor to the general counsel Stephen Jonas.

Comer also subpoenaed the assistant director of the Secret Services’ Intergovernmental and Legislative Affairs office, Vincent Tutoni, and the acting special agent in charge of the congressional affairs program for the Secret Service, David McKeown, to testify before the committee.

Comer added that House Republicans “will hold the Biden Administration accountable for running interference for the Biden family’s corruption and criminal activity.”

The subpoenas come after whistleblowers testified before Congress this year alleging that prosecutorial decisions made throughout the Hunter Biden investigation, led by now-Special Counsel David Weiss, were influenced by politics.

Multiple whistleblowers testified that Secret Service headquarters were tipped off in December 2020 about a planned interview by FBI and IRS agents of Hunter Biden in a probe of his taxes. The tip-off that resulted in the Biden transition team being notified by the Secret Service, and then the interview of then-President-elect Joe Biden’s son not taking place at all, even while he was labeled the target of the years-long federal investigation.

One whistleblower explained that the FBI and IRS sought to interview Hunter Biden on Dec. 8, 2020. The whistleblower told Congress that on Dec. 7, 2020—the night before the interview—the whistleblower was informed that the FBI had “notified Secret Service headquarters and the transition team about the planned actions the following day…essentially tipping off a group of people very close to President Biden and Hunter Biden and gave this group an opportunity to obstruct the approach on the witness.”

That testimony was corroborated by a former FBI supervisory special agent who accompanied that IRS whistleblower during the attempt to interview Hunter Biden. The interview did not occur.