Spotlight: House judiciary panel takes over Trump impeachment proceeding

Noah Feldman (L), professor of law at Harvard Law School, and Stanford University Law Professor Pamela Karlan testify before the U.S. House Judiciary Committee on Capitol Hill in Washington D.C., the United States, on Dec. 4, 2019. The Democrat-led House Judiciary Committee took over a months-long impeachment proceeding into U.S. President Donald Trump by holding its first hearing on Wednesday. (Xinhua/Liu Jie)