Why the biggest domestic intelligence threats are often home-grown

Last month, Fox News reported that more than 700 Iranian nationals — some flagged for terrorism concerns — had been admitted into the United States during the Biden years by US immigration authorities. Arrested while crossing our border with Mexico, they were later released by the administration into the sprawl of American life. But while political chatter continues to orbit the border — who crossed, when and how — the more urgent threat is hiding in plain sight. It doesn't wear foreign colors or carry a forged passport. It wears a uniform. It carries a badge. It has credentials. And…