The creation of a separate department will likely need congressional support, though Trump could try to establish the department within a different existing agency.

WASHINGTON, D. C. - U.S. Sen. Bernie Moreno introduced his first piece of legislation on Tuesday - a bill aimed at funding the “External Revenue Service” that President Donald Trump has promised to create.

The creation of a new agency requires an act of Congress, and Republicans hold the majority of both the House and the Senate.