Donald Trump faces twin legal crises on Monday in New York, where he could see the possible seizure of his storied properties over a massive fine as he separately fights to delay a criminal trial even further.

The 77-year-old real estate magnate, who has once again clinched the Republican nomination despite facing a raft of legal charges, has already been hit by heavy fines in two civil cases.

In his case over business fraud, his lawyers on Monday must either prove that he can guarantee payment of the $454 million fine or face the possible seizure of some of his assets.

Judge Arthur Engoron imposed that fine after finding Trump and his two adult sons guilty in a non-jury trial.