When the threat appeared imminent, the FBI had to move in on the only charge that could stick for now: weapons charges. Sohaib Abuayyash, 20, was planning a massive terror attack targeting Jewish people in the Houston area. He had visited multiple gun ranges in the area and was trying to obtain instructions for bomb-making. How Abuayyash was able to get firearms is a detail that will be revealed in time, but yes—he shouldn’t have been able to purchase or possess any firearm on a non-immigrant visa. That paperwork expired in 2019, but he’s been allowed to remain on American...