WASHINGTON, Jan 8 (Reuters) - U.S. Treasury Secretary

Janet Yellen said on Wednesday that Nippon Steel's ( NISTF ) blocked

acquisition of U.S. Steel received a "thorough analysis" by an

interagency national security review body that was sent to

President Joe Biden.

Yellen, in a live interview on CNBC, said she could not

discuss specifics of the review of the merger blocked by Biden

last week that is now the subject of a lawsuit that alleges that

the review by the Committee on Foreign Investment in the United

States (CFIUS) was not conducted in good faith and was

prejudiced by Biden.

"I think, as you know, there is ongoing litigation over this

case, and as head of CFIUS, I regret there is very little

substantive that I can say to you about this," Yellen said.

"Other than that, CFIUS did analyze the specifics, as it always

does of this situation, and prepared a thorough analysis to go

to the president."