Senator Robert Kelly is a member of the United States Senate and a huge supporter of the Mutant Registration Act.

Age of Apocalypse

Robert Kelly, held prisoner by Apocalypse's guards Absorbing Man and Diablo in a Mayan temple, was rescued by the X-Men Nightcrawler, Magneto, and Rogue. They were able to free him from his captors, and Kelly went on to draft the Kelly Pact, an agreement of peace between mutants and humans, though Apocalypse did not intend to keep true to the treaty.

After the fall of Apocalypse, Robert Kelly was elected President. Remembering the role the X-Men had played in destroying Apocalypse, he made a press conference telling humans across the globe to grant amnesty to the mutants that helped get human society back on its feet.

Robert Kelly was a human and did not have any mutant powers.