FISA 702 warrantless surveillance purports to target only foreign subjects, but in practice sweeps in a huge amount of Americans’ communications. This allows intelligence agencies to exploit a backdoor search loophole: the FBI, CIA, and NSA conduct “U.S. person queries” of FISA 702 records to deliberately pull up Americans’ private messages, all without a warrant or any court approval. This loophole has led to systemic abuse, involving thousands of improper queries each year, including those directed at protesters, campaign donors, journalists, lawmakers, and — in one case — the online dating matches of an analyst.