A proposed rule under the Trump administration could soon allow handguns to be mailed through the United States Postal Service for the first time in nearly a century, a move that has sparked strong opposition from Democratic attorneys general across two dozen states. The 1927 law, enacted by Congress to curb crime, currently bars the USPS from mailing concealable firearms unless they originate from licensed dealers. However, in January, the Department of Justice (DOJ) revisited this statute, declaring it unconstitutional and a violation of the Second Amendment, and urged the postal service to revise its regulations. The DOJ asserted that "as long as Congress chooses to run a parcel service, the Second Amendment precludes it from refusing to ship constitutionally protected firearms to and from law-abiding citizens, even if they are not licensed manufacturers or dealers." Last month, the USPS proposed a new rule that would permit individuals to mail concealable firearms, such as pistols and revolvers.…