I'd be curious to understand more about how Lindsey Halligan was appointed US attorney in ED VA.
If, as some reports indicate, AG Bondi purported to appoint her pursuant to 28 USC 546, then (on my understanding of the preceding appointments) her appointment might well be invalid. 1986 OLC opinion by a fellow named Alito suggests as much.
If Trump appointed her pursuant to Vacancies Reform Act, her title would be "acting United States Attorney." But indictment doesn't say "acting."

Writing for the National Review on Monday, Whelan — who became infamous for claiming Supreme Court Justice Brett Kavanaugh's sexual assault accuser confused him with someone else — argued that the prosecutor Trump put in charge of the Eastern District of Virginia, former defense lawyer Lindsey Halligan, was not "validly" appointed to that role.

The reason for that is complicated and technical, Whelan wrote — but it matters.

"There are two general authorities for filling a U.S. Attorney vacancy and two avenues under each authority," he explained. "One authority is section 546 of Title 28. Section 546 authorizes the Attorney General to appoint an interim U.S. Attorney for a term of 120 days. Under section 546(d), once the 120-day term expires, 'the district court for such district may appoint a United States attorney to serve until the vacancy is filled.'"

The other way, he said, is subsection 3345(a)(1) of Title 5 of the Vacancies Reform Act, which says the first assistant in the U.S. Attorney's office becomes acting U.S. Attorney unless the president designates someone else — this is how he installed Alina Habba as acting U.S. Attorney in New Jersey despite the district court rejecting her after the 120-day interim cutoff, a matter currently being challenged in court.

"It seems clear that the Trump administration purported to place Halligan in office via an Attorney General appointment under section 546," wrote Whelan, because none of the DOJ statements about her identify her as an "acting" U.S. Attorney.....

"Section 546 is best read to mean that the Attorney General cannot make a second interim appointment under section 546 after the first interim appointment has expired," Whelan continued. "Instead, the authority to make an interim appointment then lies with the district court. This has been DOJ’s own longstanding position, set forth in a 1986 Office of Legal Counsel opinion by then-deputy assistant attorney general Samuel Alito" — now one of the most pro-Trump justices on the Supreme Court.

Indeed, he noted, Alito wrote in that opinion that Congress has the power to “place restraints on a statutory authority to make interim appointments” — and that they clearly did so here, in a way that makes Halligan's appointment illegal. This means the district court, not the president, fills the vacancy unless Trump can get Halligan confirmed permanently by the Senate.