US Treasury Secretary Steven Mnuchin arrives for a Senate Banking, Housing, and Urban Affairs Committee hearing regarding housing finance reforms on Capitol Hill in Washington D.C., the United States, on Sept. 10, 2019. (Photo by Ting Shen/Xinhua) 

US Treasury Secretary Steven Mnuchin speaks at a Senate Banking, Housing, and Urban Affairs Committee hearing regarding housing finance reforms on Capitol Hill in Washington D.C., the United States, on Sept. 10, 2019. (Photo by Ting Shen/Xinhua)

US Treasury Secretary Steven Mnuchin speaks at a Senate Banking, Housing, and Urban Affairs Committee hearing regarding housing finance reforms on Capitol Hill in Washington D.C., the United States, on Sept. 10, 2019. (Photo by Ting Shen/Xinhua)