The Department of Homeland Security has announced that Americans will no longer need to remove their shoes at airport security checkpoints. This change will allow passengers traveling through domestic airports to keep their shoes on during screening. The removal of shoes at TSA checkpoints, which has been in place since 2006, was implemented following the "shoe bomber" incident in 2001. Homeland Security Secretary Kristi Noem assures that security remains a top priority and that the change is part of efforts to enhance the traveler experience while maintaining high security standards.
Source: https://tasteofcountry.com/tsa-airport-security-shoe-removal/