NEW YORK -- U.S. stocks on Wednesday more than erased the previous day's rebound as investors priced in new, drastic actions, such as the closure of the U.S.-Canada border.
A 7% decline in the broader S&P 500 tripped the stock market's circuit breaker during the session, halting trading for the fourth time this month. The index fell 5% for the day, while the Dow Jones Industrial Average sunk below 20,000 to close at 19,902.
