 The U.S. Senate has started hearings into the Key Bridge collapse. Senator Tom Carper is the chairman of the Senate Environment and Public Works Committee, which met this week for the first time. Senator Carper told his colleagues that one issue needs to be addressed for all bridges across the country. After the collapse of the Key Bridge, you can delight that of the 4,000 bridges in the United States that allow ships to pass under them, two-thirds, two-thirds lack fundamental peer protection.