By Hadley Arkes, The Catholic Thing - Biden has been nothing if not a weathervane for winds blowing in his party, and that party has become ever more aggressive on the matter of abortion, brooking virtually no limits on that killing, even at the point of birth for babies who survive the abortions. And yet, nothing could be more central in the moral teaching of the Church – no, not climate change or the ravages of air-conditioning – than the concern for the meaning of the “human person,” that being who is both the subject of the law and the prime object of its protection.