Utah Firearms Protection Act is now state law:

Bill: SB11 (PDF)

Sponsored by Sen. Margaret Dayton and signed into law by Gov. Herbert, SB11 states: “A personal firearm, a firearm action or receiver, a firearm accessory, or ammunition that is manufactured commercially or privately in the state to be used or sold within the state is not subject to federal law or federal regulation, including registration, under the authority of congress to regulate interstate commerce.”

Gov. Herbert comments, “There are times when the state needs to push back against continued encroachment from the federal government. Sending the message that we will stand up for a proper balance between the state and federal government is a good thing,”

Also: “Gov. Herbert Signs SB 11”