Ohio Republican Representative Jim Jordan has revealed that the House Judiciary Committee is initiating an inquiry into reports suggesting that the Justice Department conducted surveillance on members of Congress and their staff.

Iowa’s Republican Senator, Chuck Grassley, is also investigating claims that the Department of Justice surveilled his former chief investigative counsel, Jason Foster. Jordan made this investigation public on Fox Business on Tuesday.

“We now know that they spied on congressional staffers,” Jordan said in an appearance on Fox Business’s The Evening Edit with Elizabeth MacDonald. “We want to know, how far does it go? Were they spying on members? Were they spying on other staffers? Keep this in mind, Liz: We know they spied on President Trump’s campaign. We know all that from the FISA Court and what they did with Carter Page and Papadopoulos—everything else. Now we’ve learned that they spied on one of Sen. Grassley’s staff members, Jason Foster.”

“We want to know, does it go further?” he stressed. “So we’ve sent letters not only to the Department of Justice but to all these carriers that the Department of Justice worked with to get the phone records and the email records from congressional staffers like Mr. Foster. How far does this go? Were they spying on members and other staff?”

Jordan has penned letters to the CEOs of Alphabet, Apple, AT&T, T-Mobile, and Verizon, alongside Attorney General Merrick Garland. These letters request information regarding the Department of Justice’s reported efforts to access the private communications of members of Congress and their staff as part of their inquiry.

“The Justice Department’s efforts to obtain the private communications of congressional staffers, including staffers conducting oversight of the Department, are wholly unacceptable and offend fundamental separation of powers principles as well as Congress’s constitutional authority to conduct oversight of the Department,” the letter to Apple CEO Tim Cook read.

The letter further expounds upon the assertion that the Department of Justice (DOJ) issued subpoenas to congressional staffers who were investigating the DOJ’s Crossfire Hurricane operation on behalf of the House Permanent Select Committee on Intelligence. These subpoenas were allegedly issued with the aim of acquiring emails and records.

“These revelations strongly suggest that the Justice Department weaponized its law-enforcement authority to spy on the entities seeking to hold it accountable,” the letter stated.

The House Judiciary Committee is conducting an investigation into allegations of politicization within the Hunter Biden inquiry. Federal prosecutors are appearing for transcribed interviews behind closed doors as part of this investigation.

Stuart Goldberg, an attorney for the Department of Justice’s Tax Division, is scheduled for his interview on Wednesday. Additionally, U.S. Attorney for the Central District of California, Martin Estrada, is set for a transcribed interview.

After facing years of allegations regarding politicization and misconduct within Justice Department agencies during the investigation of the president’s son, the committee has requested testimony from DOJ officials.

Representative Jordan has been collaborating with the Justice Department for several months to secure testimony from federal prosecutors involved in the Biden investigation.

Hunter Biden’s transcribed interview with the government’s special counsel, David Weiss, has been rescheduled to take place on Monday, November 7th, behind closed doors. In a hearing held earlier last month, the president’s son pleaded not guilty to all charges. According to Weiss, the investigation into the president’s son remains ongoing.

Jordan also presented alleged evidence linking President Biden to his son, who, as stated by his attorney George Mesires, served on the board of Ukrainian energy corporation Burisma Holdings from 2014 to 2019.