Experts call Trump's raft of tariffs "worse than the worst-case scenario." There's been a pause and exemptions -- with things moving fast, here's what to know.

Trump has described the tariffs as "reciprocal," saying the steep toll will correct a grievance he's held for "35 years:" that the U.S. is being "ripped off" by trade imbalances. The president has claimed the tariffs will prompt countries to try to negotiate a deal with the U.