In 2017, the National Rifle Association celebrated its ascendant political power with a newly elected U.S. president, Donald Trump, who stood at the organization’s national convention lectern promising to deliver for the gun rights group that had helped secure his election. But four years later, the NRA is confronting challenges that have undercut the power of the long-feared lobby organization, even as new gun control measures are proposed after two mass shootings in a week in Atlanta and Boulder, Colo. Your browser is set to private mode. To continue reading, log in or subscribe. Subscribe Already a subscriber? Log in now.