The duo made the appeal during a joint news conference following a multilateral meeting between Mr Blinken and foreign ministers of Egypt and Saudi Arabia.
It is unclear when or if Mr Biden will visit Africa before the polls, where he will again face his predecessor, Donald Trump.
Mr Blinken will hold bilateral talks with the Nigerian delegation headed by Mr Tinubu.
U.S. Secretary of State Antony Blinken has arrived in Israel, Reuters reported on Thursday, citing a witness.
This followed Mr Bazoum’s appeal to the ECOWAS Court to free him from detention on Wednesday.
“The visa restriction policy announced today will apply to specific individuals and is not directed at the Sierra Leonean people.”
The State Department plans to reduce processing times to six to eight weeks for routine service and two to three weeks for expedited service.
On Monday, U.S. Secretary of State Anthony Blinken denounced Russia’s decision to suspend participation in the Black Sea Grain Initiative.
The United States has decided to rejoin UNESCO in July.
U.S. secretary of state Anthony Blinken has assured President-elect Bola Tinubu of the U.S. commitment to work with his administration.
