A sign greets visitors at the Biden Welcome Center in Newark, Del., Monday, Sept. 7, 2026. (AP Photo/Robert Yoon)

Nigerian industrialist Aliko Dangote, forth from Left, participates in the Opening Gong Ceremony of the Dangote Refinery Initial Public Offer at the Nigeria Stock Exchange in Lagos Nigeria, Monday, Sept. 14, 2026. (AP Photo/Sunday Alamba)

Nigerian industrialist Aliko Dangote, centre, participates in the Opening Gong Ceremony of the Dangote Refinery Initial Public Offer at the Nigeria Stock Exchange in Lagos Nigeria, Monday, Sept. 14, 2026. (AP Photo/Sunday Alamba)

FILE - The Dangote oil refinery sits in Lagos, Nigeria, May 22, 2023. (AP Photo, File)

Nigerian industrialist Aliko Dangote, attends the Opening Gong Ceremony of the Dangote Refinery Initial Public Offer at the Nigeria Stock Exchange in Lagos, Nigeria, Monday, Sept. 14, 2026. (AP Photo/Sunday Alamba)

Nigerian industrialist Aliko Dangote, centre, participates in the Opening Gong Ceremony of the Dangote Refinery Initial Public Offer at the Nigeria Stock Exchange in Lagos Nigeria, Monday, Sept. 14, 2026. (AP Photo/Sunday Alamba)

The John F. Kennedy Center for the Performing Arts, is seen, Sunday, Sept. 6, 2026, in Washington. (AP Photo/Jose Luis Magana)

A sculpture of President John F. Kennedy is seen at The John F. Kennedy Center for the Performing Arts, Sunday, Sept. 6, 2026, in Washington. (AP Photo/Jose Luis Magana)