President Trump and his backers have recently drawn a lot of attention — and outrage — by threatening something akin to a party purge: Republicans who don’t sign on to Trump’s agenda won’t be endorsed or funded. The uproar isn’t surprising in that it’s yet another violation of political norms in the Trump era. But it’s not an original tactic.
In fact, in the not-too-distant past, another Oval Office occupant tried to impose his will on his party as part of a broad-based rewriting of political norms that also saw him disregard the other branches of government, make expansive use of war powers and face accusations of being a dictator.
That president was Franklin Delano Roosevelt.
Presidents push at the