The "golden share" gives the U.S. government a level of control, but not a financial stake, in the Pittsburgh-based company.

Nippon Steel and U.S. Steel say they've finalized their “historic partnership,” a year-and-a-half after the Japanese company first proposed its deal to buy the iconic American steelmaker for nearly $1

The deal gives the White House extraordinary control over U.S. Steel as part of a pact to alleviate national security concerns.