A new bill to be introduced in congress.
Since the intent of the second amendment is to leave power in the hands of the people, and not a military, or police state, then the law should be amended to state, that all military and police under the United States, shall not possess or use in their duties, any weapon greater than that of the average American citizen.
Ban assault weapons, but you better take them from the police and military then too.
Arbitrary enforcement of the law is the mark of tyranny. Citizens will always fight against it.