Jamieson Greer confirmed to serve as Trump's trade chief

• During his first month back in office, Trump has gone after specific products like steel and aluminum and entire countries like Canada, Mexico and China.

Zoom in: Greer, who was Lighthizer's chief of staff during Trump's first term, told the Senate Finance Committee earlier this month that he's planning to ramp up digital trade efforts.

• He said the U.S. trade representative needs to explore Section 301 to combat digital services taxes, an approach that Lighthizer took that resulted in threats to impose billions of dollars worth of tariffs.
• Greer said semiconductors are at the top of his list of products that need to be brought back to the U.S.