"...there would need to be some sort of a psychological test to state if the person is mentally stable enough to be in possession of firearms and ammunition." If implemented, we'd have to pass a test to claim our Second Amendment protected right to keep and bear arms. Perhaps we should also test journalists to assure they are capable of acting responsibly under their rights protected by the First Amendment. And then there's the question of what is "normal" and who would administer the test and how would it be administered so as to exclude bias of the tester.
Finally, a preposition is a bad word to end a sentence with.