Once a self-described Never Trumper who slammed Donald Trump’s 2016 campaign as “cultural heroin,” Sen. J.D. Vance (R-Ohio) is now a full-fledged MAGA Republican who combines populism and working-class themes with extreme social conservatism. Trump’s decision to make Vance his running mate has brought a renewed focus on comments the “Hillbilly Elegy” author made in 2021 and 2022, when he angrily railed against “childless cat ladies” and “childless Democrats.” Vance called for the U.S. tax code to “punish” Americans who don’t have biological children, and he even described Americans who don’t h…