Dec 2 (Reuters) - U.S. President-elect Donald Trump said

on Monday a series of tax incentives and tariffs will revive

storied American firm U.S. Steel, as he reiterated his

opposition to Nippon Steel's ( NISTF ) planned $15 billion

purchase of the company.

"I am totally against the once great and powerful U.S. Steel

being bought by a foreign company, in this case Nippon Steel ( NISTF ) of

Japan," Trump wrote on his social-media platform Truth Social.

"I will block this deal from happening. Buyer Beware!!!"

Nippon Steel ( NISTF ) hopes to close the deal before Trump retakes

the White House on January 20, despite opposition from President

Joe Biden and a powerful U.S. labor union.

Last week, Japanese Prime Minister Shigeru Ishiba wrote to

Biden, who has referred the deal to a government panel that

reviews foreign investments for national security risks, asking

him to approve the transaction, sources have said.

The deadline for that Committee on Foreign Investment in the

United States (CFIUS) review is next month. CFIUS could approve

the deal, possibly with measures to address national security

concerns, or recommend that the president block it. It could

also extend the review.