While he was attending Columbia University in New York City, Barack Obama's maternal grandparents — Stanley and Madelyn Dunham — visited him there. The president lived with them in Hawaii for much of his youth. Reuters /Landov hide caption toggle caption Reuters /Landov The Two-Way KitchenAid Apologizes For 'Offensive Tweet' About Obama's Grandmother October 4, 2012 Someone on the company's social media team posted an ugly message during Wednesday night's debate. The appliance maker's senior director has personally apologized. The person who wrote it "won't be tweeting for us anymore."