Democrats have been hammering Sen. J.D. Vance (R-Ohio) relentlessly over his “childless cat lady” remarks from 2021 and 2022. The comments received some criticism back then, but they are drawing a lot more criticism now that the “Hillbilly Elegy” author is Donald Trump’s presidential running mate and one of the women he attacked for not having biological children — Vice President Kamala Harris — is now 2024’s presumptive Democratic presidential nominee. In 2021 and 2022, Vance argued that Americans who don’t have biological children should be “punished” through tax increases. The MAGA senator …