Key provisions in the president’s signature legislation will take effect at different times over several years.

The last time tariffs were this high, the number one job in the U.S. was "farm laborer," average life expectancy was 50 years, and there were five cars for every 1,000 people.

U.S. stock indexes are edging mostly lower following President Donald Trump’s latest updates to his tariffs, but Wall Street is hanging near its record amid speculation about whether the president may ultimately back down.

Wall Street is pointing lower before the opening bell with new tariffs announced for Europe and Mexico and as the unofficial start of earnings season get under way this week.