The House GOP gun proposal would give the Justice Department three days to convince a judge there’s probable cause that the prospective buyer would use the weapon in connection with terrorism and stop the sale.

But conservative lawmakers, including several who belong to the far-right House Freedom Caucus, argued that the legislation could violate an individual’s Second Amendment rights, based on what the government anticipates that person might do in the future.

“If the bill becomes law, it will mark a massive expansion of the government’s ability to restrict gun rights on the basis of precrime—a crime not yet committed,” Freedom Caucus member Justin Amash (R-Mich.) posted in a lengthy diatribe on his Facebook page. This bill “is the actualization of dystopian fiction.”

Added Rep. Dave Brat (R-Va.), another Freedom Caucus member: “If it is a suspected terrorist and we have evidence to that extent, then Logic 101 [suggests] that person should either be in jail or out of the country.”

Other conservative lawmakers opposed to the GOP gun bill included Reps. Tim Huelskamp (R-Kansas) and Raul Labrador (R-Idaho).