But he's far from the first.
Numerous other people connected to Trump, either through his 2016 campaign, his presidency or his business, have been charged with crimes. Many of those charges came out of former special counsel Robert Mueller's investigation into Russian election interference in 2016.
Here are some of them:
Bannon, 66, was arrested Thursday morning and charged with defrauding hundreds of thousands of donors through a campaign to crowdfund the construction of a wall along the U.S.-Mexico border.
The former executive chairman of right-wing news site Breitbart, Bannon was tapped in August 2016 to become chief executive of the Trump campaign. After Trump won the presidential election, Bannon became Trump's chief White House strategist. He left that role in August 2017.
Bannon and three others – including Brian Kolfage, who spearheaded the "We Build the Wall" fundraising effort – were each indicted by the U.S. Attorney's Office for the Southern District of New York on one count of conspiracy to commit wire fraud and one count of conspiracy to commit money laundering. The counts carry a maximum penalty of 20 years in prison each, according to a press release from the office.
"As alleged, not only did they lie to donors, they schemed to hide their misappropriation of funds by creating sham invoices and accounts to launder donations and cover up their crimes, showing no regard for the law or the truth," said Philip Bartlett, inspector in charge of the New York field office, in the press release.
Later Thursday, Bannon pleaded not guilty at a court hearing.
The White House distanced Trump from the alleged crowdfunding scheme. "As everyone knows, President Trump had no involvement in this project and felt it was only being done in order to showboat, and perhaps raise funds," White House press secretary Kayleigh McEnany said in a statement. She cited Trump's critical tweet from July about the project.
Trump campaign surrogates, including the president's son, Donald Trump Jr., and his girlfriend Kimberly Guilfoyle, previously applauded the effort to privately fund the wall. A spokeswoman said Thursday that Trump Jr.'s "previous praise of the group was based on what he was led to believe about their supposed intention to help build the wall on our southern border and if he and others were deceived, the group deserves to be held accountable for their actions."
Stone, 67, Trump's longtime friend and an official on the then-candidate's 2016 campaign, was arrested in January 2019 in a predawn raid at his Florida home.
He was hit with a seven-count indictment as part of Mueller's probe into Russian meddling, possible collusion between the Trump campaign and Russia, and potential obstruction of the probe by Trump.
Stone was charged with lying to Congress about his communications related to document disclosure group Wikileaks, which released reams of Democratic officials' emails late in the 2016 election. Stone was also charged with obstruction and witness tampering for threatening an associate, comedian Randy Credico, in an effort to get him to corroborate his lies to Congress.
Stone was convicted at trial in November. Last month, Trump, who has railed against Mueller's probe and Stone's prosecution, commuted Stone's sentence just days before he was set to begin his 40-month prison term.
Flynn, 61, served as Trump's first national security advisor before resigning less than a month after Trump's inauguration.
The resignation was related to Flynn's conversations with then-Russian Ambassador Sergey Kislyak in the weeks before Trump took office. In December 2017, Flynn pleaded guilty to making false statements to the FBI about his talks with the Russian diplomat. But he later sought to undo that plea, and the Department of Justice in May moved to drop its prosecution of Flynn.
Earlier this month, the U.S. Court of Appeals for the Washington, D.C., Circuit heard arguments about whether Flynn's case in federal court should be dismissed. Trump has not ruled out the possibility of pardoning Flynn.
Trump's former campaign chairman, Manafort, 71, was convicted in August 2018 of tax and banking crimes. He later pleaded guilty to conspiracy charges ahead of a second trial, which was also related to Mueller's probe.
In June 2018, a federal judge revoked Manafort's bond and ordered him to jail. He remained in custody until this May, when he was allowed to serve the remainder of his seven-year prison term under home confinement due to fears about the spread of the coronavirus.
Gates, 48, who worked on Trump's campaign and his inaugural committee, was sentenced in late 2019 to 45 days in jail for conspiracy and making a false statement. A former close associate of Manafort, Gates had agreed to cooperate with Mueller's team.
Cohen, 53, the president's longtime personal lawyer and fixer, pleaded guilty in 2018 to multiple crimes, some of which related to Trump.
Cohen pleaded guilty to campaign finance violations related to his facilitation of hush money payments before the 2016 presidential election to porn star Stormy Daniels and Playboy model Karen McDougal in exchange for their silence about their alleged affairs with Trump. The president has denied the alleged trysts.
Later in 2018, Cohen pleaded guilty to lying to Congress about a proposed Trump Organization real estate project in Russia.
Cohen has since dispensed with his former loyalty to Trump. In the foreword of a forthcoming book about his relationship with the president, Cohen teased a slew of scandalous details about his years in Trump's shadow.
Cohen was released from prison to serve the remainder of his prison sentence under home confinement.
A onetime Trump campaign foreign policy aide, Papadopoulos, 33, spent 12 days in jail after pleading guilty in 2017 to lying to the FBI as part of the Mueller probe.