Summary in Seconds: Although Christian nationalism has become more prominent in American politics, the United States is simultaneously experiencing its fastest religious transformation in modern history. Nearly three in ten Americans now identify as religiously unaffiliated, church attendance has fallen sharply, and thousands of churches are closing each year. Rather than abandoning spirituality altogether, many people are seeking meaning through alternative sources such as social media, folk traditions, and AI-powered religious apps. This sweeping cultural shift is reshaping community life, political campaigns, and the nation’s religious identity, with little evidence that isolated reports of renewed church attendance are reversing the