(Adds dropped word "working" to quote in second paragraph)
WASHINGTON, Dec 26 (Reuters) - U.S. President Donald Trump is "very happy" with his Treasury secretary, Steven Mnuchin, a top White House economic adviser said on Wednesday, as he defended the Treasury for a recent call to top bankers to discuss markets.
"I am highly confident that the president is very happy with Secretary Mnuchin," White House Council of Economic Advisers Chairman Kevin Hassett told Fox Business Network. "I've met with them together in the Oval (Office) many, many times and they have a very collegial and productive working relationship." (Reporting by Tim Ahmann Editing by Chizu Nomiyama)