http://reason.com/blog/2017/10/11/bump- ... ssession-o
Massie is also troubled by the retroactive criminalization of devices that people already own. "Are the manufacturers going to be compelled by the government to turn over lists of customers who legally acquired [products] that were declared by the regulatory authority to be legal?" he wonders. "This could set the precedent for a gun grab if you're retroactively banning these things."