President Joe Biden is expected to sign an executive order on Tuesday to increase background checks and promote better firearms storage. The order will direct Attorney General Merrick Garland to clarify the statutory definition of who is “engaged in the business” of selling firearms. The order is part of a larger effort by the Biden administration to reduce gun violence in the United States, including a ban on so-called “ghost guns” and a requirement for buyers to undergo background checks for all firearms purchases.