Donald Trump is basically gaffe-proof. But that doesn’t mean his factual flubs have nothing to tell us about the man or his policies.

Take what happened in Tampa Tuesday night. Speaking at a rally, the president freewheeled into a rant about the need for Voter ID laws. This is a pretty mainstream Republican idea. Long before Trump was the party’s figurehead, GOP politicians were rattling off the same talking point that Trump hit last night: You have to show ID to buy booze or smokes, you have to show ID before you can board a plane, so why shouldn’t you have to show ID before entering the Holy of Holies of American democracy, the voting booth?

But Trump added something new to the mix. “You know, if you go out and you want to buy groceries, you need a picture on a card, you need ID,” he said. “You go out and you want to buy anything, you need ID and you need your picture.”

To clarify: You do not have to show a photo ID before buying bread, eggs, and milk at the local Kroger.