"It’s estimated that some fifty million new things get classified each year, and the more than two million people with security clearances, military and civilian, can potentially add to the pile..."

"... by one route or another. Presidents do not have the power to declassify documents psychically, as Trump has suggested, but their power to do so in other ways is surprisingly broad and ill-defined, governed largely by executive orders and precedent. That reality had complicated the legal case against Trump even before Biden’s lawyers found the first documents. The President has not yet said for sure if he will run again in 2024. The affair of the documents may prove something of a stress test. Republicans would no doubt like to see all these story lines—the documents, Hunter, the Corvette, Communists—merge into a lurid fog that obscures the real line between Trump’s case and Biden’s. They are not the same, and that is something worth emphasizing. But the fact that these two very different men, for different reasons, both had classified documents in their homes should be cause for reflection about our system of secrecy, too."

 
From "The Biden-Documents Mess House Republicans are ramping up conspiracy theories, but one thing seems clear: the government’s documents system has an overclassification addiction" by Amy Davidson Sorkin (The New Yorker).