What are you talking about? Law enforcement has already been confiscating firearms according to the new 'red flag' laws that have/are being passed in many states. https://baltimore.cbslocal.com/2018/11/05/fatal-officer-involved-shooting-in-anne-arundel-county/ During Hurricane Katrina, the millitary went around confiscating people's guns. https://www.quora.com/Why-were-guns-confiscated-during-Katrina