When political observers describe J.D. Vance as “weird,” what they usually mean is the Republican vice-presidential nominee’s ranting about childless people, his extremism on questions like abortion and divorce, or perhaps his choice of eyeliner. But there is a deeper level to Vance’s political weirdness that places him amid the most sinister political forces in the nation today — and calls into question the supposed patriotism that motivates him and the “America First” movement he and Donald Trump now represent. To understand what Vance really stands for, and why his ideology is so distant f…