History shows that tariffs to revive U.S. manufacturing, reclaim jobs and counter allegedly unfair trade practices rarely succeed. In today's interconnected world, they're more likely to provoke painful retaliation.

President Donald Trump has suggested he might temporarily exempt the auto industry from tariffs he previously imposed on the sector, to give carmakers time to adjust their supply chains. Meanwhile, the Trump administration has taken its next steps toward imposing more tariffs on key imports,

The White House has taken pains to say administration officials are unified on the tariff effort announced on April 2, which the White House dubbed "Liberation Day."