What you.s. president had great influence on the passing of the 15th amendment?

President Ulysses S. Grant had a significant influence on the passing of the 15th Amendment, which aimed to guarantee African American men's right to vote. His administration actively supported Reconstruction efforts and pushed for civil rights legislation, including the amendment's ratification in 1870. Grant's commitment to enforcing the amendment was evident in his efforts to combat voter suppression and protect the rights of Black citizens during his presidency.