A bill to prevent the militarization of Federal, State, and local law enforcement by Federal excess property transfers and grant programs.

Stop Militarizing Law Enforcement Act This bill limits the authority of the Department of Defense (DOD) to transfer excess DOD property, including small arms and ammunition, to federal and state agencies for law enforcement activities. The bill prohibits the Federal Emergency Management Agency (FEMA) from using preparedness grants to buy, maintain, or alter: (1) specified protective, tactical, or explosives equipment, vehicles, canines, or firearms or ammunition of .50 caliber or higher; and (2) body armor or ballistic helmets and shields unless the grantee certifies to FEMA that the equipment will not be used for riot suppression. This bill prohibits the use of Edward Byrne Memorial Justice Assistance Grant funds for the purchase, maintenance, alteration, or operation of lethal weapons or less-lethal weapons.