Asia markets slumped on Monday after Donald Trump slapped tariffs on Canada, Mexico and China, sparking fears that another bruising ‘America First’ trade war that could hit global growth.

Just about everyone thought it was a bluff. Top analysts from the biggest banks on Wall Street said it was highly unlikely. Stocks were trading like it wouldn’t happen. Some companies built ...

Trump’s chaotic and illegal order to freeze agency funding usurps Congress’s power and sets up a dangerous game of constitutional chicken at SCOTUS. An imperfect system for creating a fairer ...