On Friday, Rep. Tom Rooney (R-FL) introduced legislation revoking the ATF’s claim of power to regulate ammunition via “armor piecing” language in the Gun Control Act of 1968 (GCA). The ATF is specifically claiming the ability to regulate ammunition via the “armor piercing” language contained in the Law Enforcement Officers Protection Act, an amendment added to the GCA in 1986. Their current focus is on banning the wildly popular M855 round for AR-15 rifles. Rooney’s bill would roll back the ATF’s powers to pre-1986 levels. According to The Hill, Rooney’s bill “would prohibit the ATF or any other federal agency...