Reasonable gun laws do not attempt to use the Commerce Clause to invalidate the rest of the Constitution at whim. They do not allow militarized federal enforcers to bust down peoples' doors in the middle of the night, wearing black masks and waving submachine guns at women and children, based on unsubstantiated rumors that the occupants may have violated an arbitrary federal statute. Reasonable gun laws do not establish arbitrary powers such as those which led to the ATF entrapping Randy Weaver into selling a too-short shotgun, or to FBI sniper Lon Horiuchi shooting Vicki Weaver in the head as she cradled her infant in her arms, or to the ATF and FBI torching the Mt. Carmel Center over an alleged violation of the National Firearms Act of 1934. No, gun laws in America today are not reasonable. And newly proposed laws will only make a bad situation worse.
Reasonable laws restrict the criminal mis-use of guns and all instruments.
Restricting felons from possessing firearms is too broad. Violent criminals should be prohibited from keeping weapons in general. However, surely some process should be in place to recognize those who have truly atoned for their crimes and become responsible. No innocent person should be restrained in the name of controlling crime. Honest-citizen background checks raise the costs of guns and frequently deny innocent people permission while doing little if anything to disarm criminals.