Which best describes the outcome of the 1913 case Guinn v. U.S.? The case represented a failure for the NAACP because it supported a law that limited the voting rights of formerly enslaved individuals. The case represented a failure for the NAACP because it overturned a law that guaranteed equal voting rights for all Americans. The case was a victory for the NAACP because it overturned a law that would have limited African American voting rights. The case was a victory for the NAACP because it supported an existing law that upheld African American voting rights.