DeRemer, who previously served in the House, could pave the way for action on PBMs and mental health benefits.

The Republican-led U.S. Senate confirmed President Donald Trump's nominee Russell Vought as budget director on Thursday, placing the reins of government funding in the hands of hardline conservative who has advocated for reducing Congress's power over taxpayer dollars.

Jamieson Greer previously served as the chief of staff to the trade representative during President Donald Trump's first administration.

Jamieson Greer is testifying before the Senate Finance Committee Thursday morning in his bid to be the U.S. trade representative. Greer, tapped by President Trump for the role, served as an aide in the office during the president’s first term in office.