FILE - Police respond to Perry High School in Perry, Iowa, Jan. 4, 2024. Groups pushing tighter gun laws have been building political muscle through multiple elections, boosted by the outcry following mass shootings at schools and other public places, to say nothing of the nation's daily gun violence. Now, gun control advocates and many Democrats see additional openings created by hardline positions of the gun lobby and their most influential champion, former President Donald Trump. (AP Photo/Andrew Harnik, File)