U.S. Secretary of Transportation Ray LaHood will have a new watchdog at the agency overseeing Metro's $6 billion Silver Line.

LaHood announced Tuesday that he appointed Kimberly Moore to monitor ethics and governance reforms at the Metropolitan Washington Airports Authority and report back to him.

The appointment comes after a U.S. inspector general in May found lax ethics rules and lavish spending at the airports board. Authority officials promised to tighten policies, and LaHood promised to appoint an accountability officer.

Moore is a career attorney in the U.S. Department of Transportation Office of General Counsel, LaHood's office said.

Moore will watch over MWAA until a permanent inspector general is established by Congress. Rep. Frank Wolf, R-Va., is pushing through Congress legislation creating that position.