The U.S. Supreme Court will hear arguments this month about presidential immunity and whether former President Donald Trump can be tried on charges that he conspired to overturn the results of the 2020 election.

The high court’s decision will determine how some of the presumptive GOP nominee’s legal cases advance in an election year where he is facing 91 felony charges across four trials. They include the willful retention of national defense information in violation of the Espionage Act.

“Donald Trump is trying to show that a U.S. president is immune from criminal prosecution while acting in an official capacity,” University of Georgia political scientist Charles Bullock told VOA.

“But I think, at the heart of this matter, is just how broadly Trump and his lawyers define ‘official capacity,’” Bullock explained.

“They are defining it very broadly at the moment. Trump says a president should be completely immune while president, but the three-judge circuit panel that ruled against him posed the question: ‘Well, what if the president hired a hitman to take out one of their rivals? Is that in an official capacity, and are they immune from prosecution then, as well?’ I think we’d all say, of course not!”