MONTGOMERY, Ala. (AP) — Alabama Gov. Robert Bentley has cancelled a trip to the Republican National Convention so he can monitor preparations as Tropical Storm Isaac approaches the United States. Bentley said Saturday that he wants to make sure preparations and resources are in place. The storm had pushed into Cuba on Saturday and was headed northwest, possibly threatening Alabama's coast along the Gulf of Mexico. The governor urged Alabama residents to monitor weather forecasts. He said the storm could bring damaging winds and heavy rain to the state. He urged residents to prepare.