The Republican-led House Judiciary Committee is expected to open a congressional investigation into Fulton County District Attorney Fani Willis as soon as Thursday, a source tells CNN – the same day former President Donald Trump is slated to surrender at the county jail after being charged for participating in schemes to meddle with Georgia’s 2020 election results.

The committee is expected to ask Willis whether she was coordinating with the Justice Department, which has indicted Trump twice in two separate cases, or used federal dollars to complete her investigation that culminated in the fourth indictment of Trump, the source added. The anticipated questions from Republicans about whether Willis used federal funding in her state-level investigation mirrors the same line of inquiry that Republicans used to probe Manhattan District Attorney Alvin Bragg, who indicted Trump in New York for falsifying business records to cover up an alleged hush money scheme.

Meanwhile, Georgia Republicans could launch their own state-level investigation into Willis’ probe, according to GOP Rep. Marjorie Taylor Greene of Georgia, who has spoken to top officials in the state about a potential probe. She has also been pushing for a congressional-led inquiry into Willis, who has previously dismissed GOP accusations accusing her of being partisan and consistently defended her investigation.

“I’m going to be talking to (House Judiciary Chair) Jim Jordan, (House Oversight Chair) Jamie Comer, and I’d like to also ask (Speaker) Kevin McCarthy his thoughts on looking at doing an investigation if there is a collaboration or conspiracy of any kind between the Department of Justice and Jack Smith’s special counsel’s office with the state DA’s,” Greene told CNN. “So, I think that could be a place of oversight.”

It all amounts to a familiar playbook for House Republicans, who have been quick to try to use their congressional majority – which includes the ability to launch investigations, issue subpoenas and restrict funding – to defend the former president and offer up some counter programming amid his mounting legal battles. But they’ve also run into some resistance in their extraordinary efforts to intervene in ongoing criminal matters, while there are questions about what jurisdiction they have over state-level investigations.