A group of states from across the country is backing a challenge to New York City’s restrictive gun laws. Led by Louisiana Attorney General Jeff Landry, they filed a brief last week in the pending request for cert of three NYC gun owners — Romolo Colantone, Efrain Alvarez, and Jose Anthony Irizarry — who argue the city’s “premises permit” scheme, which drastically restricts the ability to leave one’s premises with a firearm, is unconstitutional. The gun owners are licensed to have handguns on their residence or business but under current law can only leave with them to go to a...