When Donald Trump chose Sen. J.D. Vance (R-Ohio) as his presidential running mate, some right-wing media outlets exalted the 39-year-old “Hillbilly Elegy” author as Trump’s political heir. Vance was a scathing critic of Trump during the 2016 election and identified as a Never Trumper, but he has since become an in-your-face Trump supporter and an outspoken proponent of MAGA ideology. But in a think piece published on August 6, The New Republic’s Alex Shephard argues that no one in the MAGA movement is a true political heir to Trump — not even Vance. Vance, Shephard emphasizes, shows “the limit…