A trade dispute is heating up. New U.S. tariffs on Canada are now in effect, and Canada says it will hit back with dollar-for-dollar counter-tariffs. Here’s how President Donald Trump is responding.

The U.S. Postal Service is tightening rules for mail-in voting. Find out what the new policy states, and whether it could impact the midterms.

A once-in-a-lifetime event takes over the streets of Washington. The president kicked off the start of the Freedom 250 Grand Prix, and spectators shared the excitement.