Donald Trump is scheduled to surrender to face criminal charges stemming from 2016 hush money payments in a Manhattan courthouse.
He will become the first former president to face criminal charges in the nation's history.
Trump is expected to plead not guilty to the charges against him and may have his mug shot taken.
New York police are preparing for protests by Trump supporters who believe the charges are politically motivated.
Trump has been raising millions of dollars on claims of a "witch hunt" and assailed the Manhattan district attorney.
Inside the Manhattan courtroom, prosecutors led by New York's district attorney, Alvin Bragg, are expected to unseal the indictment.
After the arraignment, Trump is expected to be released by authorities because the charges against him don't require bail.
The investigation is scrutinizing six-figure payments made to porn actor Stormy Daniels and former Playboy model Karen McDougal.
The arraignment will unfold against the backdrop of heavy security in New York, coming more than two years after the U.S. Capitol riot.
The case carries instant logistical complications, and Trump's team is hoping to use it to his advantage.