01-16-2020

Sen. Rand Paul is waging a fierce campaign to prevent the Senate from hearing witnesses in Donald Trump's impeachment trial, vowing to force tough votes on his fellow Republicans if they break with the president or back Democrats' demands for new evidence.

The nondelegation doctrine, unlike most legal concepts, is less boring than it sounds. After the 1930s, it became constitutional esoterica, a relic of a bygone age in which the Supreme Court resisted efforts by Americans to regulate their own economic affairs.