President Barack Obama today signed off on nearly two dozen executive orders meant to curb gun violence. These orders launch a gun ownership safety campaign, require the Centers for Disease Control to examine the causes of gun violence, and call for law enforcement officials to receive better training for active shooter scenarios.

He also called on Congress to pass a ban on assault weapons. But Alaska lawmakers today introduced a bill that would circumvent any stronger gun control measures. The Alaska Firearms Freedom Act would make it a crime to enforce any federal prohibitions on things like assault rifles and high-capacity gun magazines.

A previous version of the bill already passed the House in 2010, and similar legislation is being introduced in states like Texas and Wyoming. But whether a ban on federal gun control measures would even be legal is in serious doubt. Adam Winkler is a professor of constitutional law at UCLA and the author of the book Gunfight. He says that under the supremacy clause of the Constitution, the federal government could just choose to ignore the Alaska law if it passes.

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