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

Former President Donald Trump is expected to shake up his legal team as soon as Thursday, just hours ahead of plans for Trump to surrender to authorities in Fulton County, Georgia, sources with direct knowledge tell ABC News.

Drew Findling is expected to depart the team and be replaced by attorney Steven Sadow, according to the sources.

Read more about the decision.

Former President Donald Trump is expected to surrender to authorities in Georgia on Thursday.

A judge had set his bond at $200,000 on Tuesday.

Trump and 18 others were charged last week by Fulton County District Attorney Fani Willis in a sweeping racketeering indictment for alleged efforts to overturn the results of the 2020 presidential election in the state of Georgia.

The former president says his actions were not illegal and that the investigation is politically motivated.

-ABC News’ Olivia Rubin, Will Steakin and Peter Charalambous

Speaking on a local Atlanta radio show, Fulton County District Attorney Fani Willis defended her decision to bring the sprawling racketeering case, arguing that the case is an even-handed application of the law.

"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."

The DA also said that recent threats made against her will not deter her from pursuing her case against the former president and his co-defendants.

"In the words of Jay-Z, brush my shoulders off and we just keep pushing," Willis said. "That is not going to deter me from doing my job."

Willis described the process of determining defendants' bond amounts as "literally just plugging things in" to a formula based on factors related to a defendant's flight risk. She also reiterated her past statement about the requirement for all defendants to surrender for processing by Friday at noon.

"Should people fail to turn themselves in, then a warrant will be filed on the system, and they'll have to be arrested," she said.

Of the 19 defendants, 15 have negotiated their bond packages and nine have subsequently been booked and released.

Attorney John Eastman was booked and released on $100,000 bond Tuesday at the Fulton County Jail, as the 18 defendants charged alongside former President Trump in the sweeping Georgia election interference racketeering case began turning themselves in.

Eastman told reporters on his way out of the facility that he plans to "vigorously contest every count of the indictment."

Co-defendant Scott Hall was also processed and released Tuesday, one day after Judge McAfee set his bail at $10,000. Hall, a Georgia bail bondsman, is among those accused of conspiring to commit election fraud in Coffee County.

After an indictment has been handed down in Georgia, bond and conditions of release are typically worked out prior to any surrender. The bond can be paid through cash, a commercial surety, or a court program that requires a payment of 10% of the bond amount.

By the end of the day Tuesday, bond had been set for more than half of the 19 defendants in the case. Fulton County Superior Court Judge Scott McAfee set former Trump attorney Jenna Ellis' bail at $100,000, a day after he set former President Donald Trump's bond at $200,000.

Ellis is accused of making false statements to overturn the 2020 election and of soliciting public officials to unlawfully appoint presidential electors.

Later Tuesday the judge set bond for Stephen Lee, a pastor, at $75,000, and for Georgia lawyer Robert Cheeley at $50,000.

According to investigators, Cheeley presented video clips to legislators of election workers at the State Farm Arena in Atlanta and alleged that the workers were counting votes twice or sometimes three times. Prosecutors say Lee worked with others to try to pressure Georgia election worker Ruby Freeman and her daughter after Trump and his allies falsely accused them of pulling fraudulent ballots from a suitcase during the vote count.

McAfee also Tuesday set bail of $75,000 for former Coffee County GOP chair Cathy Latham, and $50,000 for former Trump campaign official Michael Roman.

Latham is one of 16 Georgia Republicans who signed a certificate falsely stating that Trump had won the state, while Roman served as director of Election Day operations for Trump's 2020 reelection campaign and was involved in the plan to organize the so-called "fake electors" in battleground states.

All 19 defendants have been been given until Friday at noon to surrender. Trump said Monday evening on his social media platform that he intends to surrender in Georgia on Thursday.

In addition to Trump, Judge McAfee set bond Monday for attorneys John Eastman and Kenneth Chesebro at $100,000, for Ray Smith III at $50,000, and for Scott Hall at $10,000.

All the defendants' bond agreements include a provision that they "shall perform no act to intimidate any person known to him or her to be a codefendant or witness in this case or to otherwise obstruct the administration of justice."