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The bacteria is particularly harmful to people who are pregnant, 65 or older, or have weakened immune systems, according to health officials.
Chicago Mayor Anton Cermak was shot to death when a gunman tried to assassinate President-elect Franklin D. Roosevelt in Miami in 1933. Roosevelt was unhurt.
House Speaker Mike Johnson, R-La., said there would be hearings to determine what happened.
The automaker had announced last year that it would reopen the plant and invest nearly $5 billion, as part of its contract negotiations with the United Auto Workers.