In 2016, Mormons rejected Donald Trump in numbers unheard of for a Republican nominee — viewing the thrice-married, immigrant-bashing Republican as an affront to their values. In 2020, the president is going all-out to change their minds — a little-noticed effort that could make or break him in Arizona and Nevada, home to more than a half-million Latter-day Saints combined. Joe Biden’s campaign, sensing an unlikely opening for a Democrat, is also targeting Mormons in the pair of Western swing states.