President Joe Biden, followed by, from the left, Angola's President Joao Lourenco, Zambia President Hakainde Hichilema, Zambia President Hakainde Hichilema, and Vice President of Tanzania Philip Isdor Mpango, arrives at the Carrinho food processing factory near Lobito, Angola on Wednesday, Dec. 4, 2024. (AP Photo/Ben Curtis)

President Joe Biden shakes hands with President Felix Tshisekedi of the Democratic Republic of the Congo during the Lobito Corridor Trans-Africa Summit at the Carrinho food processing factory near Lobito, Angola, on Wednesday, Dec. 4, 2024. (AP Photo/Ben Curtis)

President Joe Biden and Chief Operating Officer of Lobito Atlantic Railway Nicolas Gregoire meet rail workers during the tour of the Lobito Port Terminal in Lobito, Angola, on Wednesday, Dec. 4, 2024. (AP Photo/Ben Curtis)

President Joe Biden, center, participates in the Lobito Corridor Trans-Africa Summit at the Carrinho food processing factory near Lobito, Angola, on Wednesday, Dec. 4, 2024. (AP Photo/Ben Curtis)

President Joe Biden accompanied by his son Hunter Biden and his grandson Beau leave a book store as they walk in downtown Nantucket Mass., Friday, Nov. 29, 2024. (AP Photo/Jose Luis Magana)