DOVER, Delaware Sept 27 (Reuters) - U.S. President Joe

Biden on Friday said he had not changed his mind about Nippon

Steel's ( NISTF ) $14.9 billion bid for U.S. Steel despite

the extension of a national security review of the proposed

tie-up.

"I haven't changed my mind," he told reporters, when asked

if the extension indicated a change of heart.

Biden, as well as his Vice President and Democratic

Presidential nominee Kamala Harris, have said U.S. Steel should

remain American-owned.