"After the Las Vegas shooting, several New York lawmakers introduced bills to explicitly outlaw the devices, and legislators in Pennsylvania, Maryland, Vermont, Hawaii, Maine and South Carolina are planning to introduce similar proposals in early 2018, according to the State Innovation Exchange, which tracks progressive state legislation.
"'Given continued Congressional inaction, it makes sense that states are taking the lead to curb gun violence and prevent further senseless tragedy,' Sam Munger, the group’s director for strategic engagement, told NBC News."