Yuval Levin has been called “the most influential conservative intellectual of the Obama era,” and the moniker fits. As editor of National Affairs — in my opinion, the best policy journal going on the right — he’s been at the head of the “reformicon” movement, and his work has had a heavy influence on top Republicans like Paul Ryan and Marco Rubio. If you had asked me a year ago to name the conservatives likely to set the agenda for the Republican Party in 2016 and beyond, Levin would’ve been atop my list. And then, of course, Donald Trump won the Republican nomination.In this atmosphere, Levin’s new book, Fractured America, reads like a warning. Written before “Make America Great Again” became the rallying cry of the Republican Party, it argues that both Democrats and Republicans were trapped inside a dangerous nostalgia, and tried to propose a way out. We talk about that way out in this podcast, as well as:- How Levin defines the Republican Party, and how he thinks it’s changed with Trump- Why Republicans…