Donald Trump Remade the GOP. What Happens When He Leaves?

Sometime around noon on January 20, 2029, Donald J. Trump, then 82, will, in all likelihood, depart the White House for the last time as president. Having served two head-spinning, nonconsecutive terms, Trump is constitutionally barred from running again. He will leave office, one way or another. But he will leave a paradox in his wake, even if he is succeeded by a Republican. The president who so thoroughly bent his party to his will also spent virtually zero effort over his two terms building anything structural to survive him...