U.S. President Joe Biden is still deciding whether to reappoint Federal Reserve Chair Jerome Powell or replace him with Fed Gov. Lael Brainard, as key senators wade in with their views on the choice.

Biden told reporters on Tuesday to expect the announcement of a nominee for Fed chair in "the next four days.” The president has ruled out other possible contenders for the job, said a person familiar with the matter, cautioning that the announcement may slip until next week.

Biden considers them both strong options and respects them both, the person said.