Mr Buhari gave the assurance at a dialogue session with some U.S. investors, Nigerian officials, diplomats and the private sector in Washington D.C. on Friday.
Team Nigeria emerged second position and also bagged other awards at the finals. Eight African teams participated in the competition.
ECOWAS said it was identifying with Nigeria as a member state during the elections.
Alban Bagbin, the Speaker of the Parliament of Ghana, who led the team said the visit is to strengthen Ghana’s legislative institute.
Tony Elumelu, chairman of Heirs Holdings, says Africa suffers the most trade discrimination and calls on its leaders to address the issue.
The situation is much worse for children, as several were already dead from hunger-related illnesses.
Ghana is currently in the grip of an economic crisis, which has caused significant increases in food and fuel prices, as well as a steep decline of the country’s currency.
It is not clear whether Mr Mayardit will seek to extend his 13-year grip on power with clear underlying health issues.
The Rwandan prime minister stressed the need for Africa to prioritise and invest in national health programmes.
The vote, postponed by a week for undisclosed reasons, was an easy win for Mr Ramaphosa as the parliament voted 214 to 148 on Tuesday against the motion to impeach.
