McDonald's (MCD) - Get Report shares tumbled Tuesday after reporting disappointing sales growth in the U.S. The world's biggest burger chain said U.S. sales rose less than two percent, falling short of analysts' forecasts of more than three percent. Globally, McDonald's said sales rose 3.1 percent. For the quarter, the company posted earnings of $1.25 a share, that's $0.14 a share below forecasts. But excluding one-time items, adjusted earnings of $1.45 topped the Street's estimates. Total sales came in at $6.27 billion, which was in line with analysts' expectations. McDonald's has said the launch of its all-day breakfast menu last fall has helped sale and it plans to expand the offerings later this year.