A slower phase-in for tariffs on auto parts will give manufacturers time to ramp up manufacturing in the U.S. Some warn they will still drive up car prices.

The Trump administration’s tariffs on imported cars and auto parts will cost General Motors between $4 billion and $5 billion this year, according to a GM letter to shareholders. CNN’s Erin Burnett interviews GM CEO Mary Barra about the impact of Trump’s tariffs.

The White House adjusted how tariffs on automotive parts are calculated, giving carmakers time to move complex global supply chains to the U.S.