We do? Oh, right, personally manufactured firearms do not need serial numbers, except in states where they require it. Those states have overstepped their authority, as federal law pre-empts state law, thereby making their laws unconstitutional. Unfortunately, my state has also gone against its own Constitution by creating laws that infringe on our rights, wherein it states, “That a well regulated militia, composed of the body of the people, trained to arms, is the proper, natural, and safe defense of a free state, therefore, the right of the people to keep and bear arms shall not be infringed; that standing armies, in time of peace, should be avoided as dangerous to liberty; and that in all cases the military should be under strict subordination to, and governed by, the civil power.”