He was a moderate Republican congressman from New York. Now he’s a MAGA loyalist poised to lead a key environmental agency.

President-elect Trump said he would nominate former Rep. Billy Long (R-Mo.) to be IRS commissioner. Why it matters: Trump and congressional conservatives have long had the IRS in their crosshairs, opposing Biden administration efforts to ramp up the tax agency's funding and audit capability.

President-elect Donald Trump wants the Internal Revenue Service under new management, and experts say change is coming. The question is how deep it will go.