Manhattan District Attorney Alvin Bragg’s indictment of Donald Trump could mean trouble down the road for Joe Biden. “I think our Republican AGs and DAs”—attorneys general and district attorneys—“should get creative,” Mike Davis, a Republican former Senate staffer, told the New York Post. Rep. James Comer told Fox that he’s heard from at least two prosecutors who “want to know if there are ways they can go after the Bidens now.”

Mr. Biden himself is currently safe under the accepted view that sitting presidents are immune from prosecution. But under the Trump precedent, what’s to stop an ambitious Republican prosecutor somewhere from bringing dubious state charges against him before a hostile jury after he leaves office? Likewise for his successors of either party. Every four to eight years, prosecutors would order up a presidential ham sandwich. Presidents might end up having to flee the country when they leave office.