The Trump administration has ordered a new national security review of Nippon Steel Corp’s bid to buy U.S. Steel, signaling a ...

Shares of U.S. Steel are hitting a 52-week high after President Donald Trump ordered a new national security review of Nippon Steel's proposed bid to buy U.S. Steel for nearly $15 billion.

U.S. Steel stock increased more than 16% in reaction to the decision to review the proposed merger with Nippon Steel for a second time.