The House Oversight and Accountability Committee's chairman plans to subpoena US Secret Service Director Kimberly Cheatle for testimony on the assassination attempt against former President Donald Trump, a spokeswoman for the panel said Tuesday, Ednews informs via CBS News.

Cheatle is set to appear before committee members for an oversight hearing on July 22, Chairman James Comer, a Kentucky Republican, announced Monday. While the Secret Service also agreed to brief lawmakers on Tuesday, the panel's spokeswoman said, the Department of Homeland Security "took over communications" with the committee and has not confirmed a time for the briefing.

"The Oversight Committee has a long record of bipartisan oversight of the Secret Service and the unprofessionalism we are witnessing from current DHS leadership is unacceptable," the spokeswoman said. "While the Secret Service confirmed Director Cheatle is expected to appear for the committee's hearing on July 22, to head off any attempt by DHS to backtrack on her appearance, the chairman will issue a subpoena for her to attend. Director Cheatle must answer to Congress and the American people about the historic failure that occurred on her watch."