The jackpot prize, handwritten on a Powerball sign, is displayed at a corner store selling lottery tickets along the U.S. Mexico border in San Ysidro, California, January 12, 2016. The Powerball lottery jackpot climbed to $1.5 billion on Tuesday, making it the largest-ever U.S. lottery prize as well as the world's biggest potential jackpot for a single winner, according to lottery officials. REUTERS/Mike Blake