Trump's plane has landed at Hartsfield-Jackson Atlanta International Airport. He is expected to be booked then released at the Fulton County Jail this evening.

Appearing on CNN, John Eastman's attorney Harvey Silverglate said his client intends to sever his case from his co-defendants and pursue a speedy trial.

"We are going to move to sever his case from the others and move for a severed trial which means we want to be tried alone," Silverglate said. "We'd like to have a speedy trial -- that is, we would like to be tried right away. It'll take three weeks and the whole nightmare will be over for him."

As of Thursday evening, Eastman has not filed a speedy trial motion or a motion to sever his case, according to his docket.

Eastman is charged with nine counts, including solicitation as well as conspiracies to commit forgery, make false statements and impersonate a public officer. The former Trump lawyer is alleged to have been involved in a scheme to solicit public officers to unlawfully appoint Georgia presidential electors.

Defendant Kenneth Chesebro has also filed for a speedy trial, while Mark Meadows, Kenneth Clark and David Shafer have separately filed to have their cases moved into federal court.

Trump's plane has taken off from New Jersey's Newark Liberty International Airport en route to Atlanta for his anticipated booking at the Fulton County Jail this evening.

Judge Steve Jones has set a hearing date of Sept. 18 for former Justice Department official Jeffrey Clark's bid to move his Fulton County criminal charges to federal court.

Fulton County District Attorney Fani Willis may submit a written response to Clark's notice of removal no later than Sept. 5, according to Jones' order.

Co-defendants Mark Meadows and David Shafer are also seeking to move their cases into federal court.

The same day Donald Trump is expected to surrender at Fulton County Jail, House Judiciary Chairman Jim Jordan, R-Ohio, launched a probe into whether District Attorney Fani Willis coordinated with federal officials, including special counsel Jack Smith.

In a new letter, Jordan demands information and communications with the Department of Justice and federal officials on the funding Willis' office receives.

"Ms. Willis's indictment and prosecution implicate substantial federal interests, and the circumstances surrounding her actions raise serious concerns about whether such actions are politically motivated," the release states.

Willis rejected any claims of the indictments being politically motivated in a recent radio interview.

"There's really nothing sexy about this," Willis told Atlanta Up Close's Maria Boynton. "There's allegations of a crime and then to look at the law and if the facts bear out that the law has been broken, then we have a duty and a responsibility to bring charges."

-ABC News' Lauren Peller and Peter Charalambous