The best reason to charge someone with a crime is because they’ve broken the law, injured others, and need to be held accountable and prevented from doing more damage. Donald Trump checks all those boxes, but there’s one more very important reason why he should be prosecuted: he intends to run for president again in 2024.

Trump has been spending his days largely on the phone, calling advisers, allies and friends. The president has been “trying to find people who will give him good news,” one adviser said.

Still, Trump has indicated in some of these conversations that he understands Biden will take over the presidency on Jan. 20, Inauguration Day. Rather than talking about a second term, Trump has been matter-of-factly discussing a possible 2024 campaign — an indication that he knows his time as president is coming to an end, at least for now.

“I’m just going to run in 2024. I’m just going to run again,” Trump has been saying, according to a senior administration official who has spoken with him this week.

To be blunt, this cannot be allowed to happen. Ideally, Trump will be formally impeached and convicted after he leaves office, precluding him from ever holding another position of honor or trust in the U.S. government. But since that’s currently a very remote possibility, the best defense is if he is behind bars.

To be sure, this isn’t foolproof. In 1920, Eugene Debs ran for president while in prison at the Atlanta Federal Penitentiary. His 919,799 votes were good for 3.4 percent of the popular vote.  That was more votes than Debs had received in 1912 (901,551) but a lower percentage (6 percent).

It’s actually not that hard to imagine Trump exceeding the roughly 70 million votes he received in 2020 four years from now from a prison cell. That’s how Nazi-crazy this country has gone. But it’s much easier to imagine him winning the 2024 election if he’s coddled as an ex-president in the interest of “unity.”

He’s a menace and a mortal threat to our Republic. He must be exposed and held accountable. It’s what he deserves, but more importantly, it’s the best protection we have from him making a comeback.