I have news for Constitutional fundamentalists: The US Constitution has been changed 27 times. It can be changed again.

Lest we forget, the Second Amendment was itself a change to the Constitution. That's why we call it an "amendment." It wasn't there at first.

In fact, the Second Amendment only prevents the federal government from infringing "the right to keep and bear Arms." States could have all the gun control they want if it weren't for the later 14th Amendment that extends rights under the federal Constitution to apply to state actions as well.

Even this thin reed of gun rights has only existed since 2010. In the 2010 McDonald v. Chicago case, the activist US Supreme Court reversed 142 years of precedent to extend the meaning of the 14th Amendment to prohibit states from prohibiting guns.