A historic day on Wall Street. Worries about tariffs and a trade war shook investors pushing the S&P 500 into a correction that left it at the lowest in six months. The S&P 500 fell 1.4% on the day, bringing its three-week rout past 10%, a level that meets the technical threshold for a correction. Romaine Bostick and Edward Harrison report on "Bloomberg The Close." (Source: Bloomberg)