The Iowa House of Representatives has passed a bill this week allowing teenagers under the age of 14 to possess a pistol or revolver with parental supervision.

The bill will now head to the State Senate, where it will become a law if it passes unless it's vetoed by Governor Terry Branstad.

Republican state representative Jake Highfill said the new bill "brings the code in line with long guns and shotguns" by allowing them to possess a firearm under direct supervision from a parent or legal guardian.

Mr Highfill added that bill defines "direct supervision" as "supervision provided by another person who maintains visual and verbal contact at all times with the supervised person".

Theoretically, under this law, a baby can legally carry a gun, as long as someone 21 or older is supervising.