Gingrich on Face the Nation:

SCHIEFFER: One of the things you say is that if you don’t like what a court has done, that Congress should subpoena the judge and bring him before Congress and hold a Congressional hearing… how would you enforce that? Would you send the Capitol Police down to arrest him?

GINGRICH: Sure. If you had to. Or you’d instruct the Justice Department to send a U.S. Marshal.

Video at the link:
Newt Gingrich Would Send U.S. Marshals To Arrest ‘Activist’ Judges