The Hill – Casino magnate and GOP super-donor Sheldon Adelson has won some powerful new allies in his quest to ban Internet gambling. At least 10 state attorneys general have signed onto a letter to congressional leaders and the House and Senate Judiciary committees asking Congress to keep online gaming illegal, according to people familiar with the lobbying effort. “Online gambling exacerbates problems associated with gambling addiction and we’re proud to be working with a number of other states to address the issue,” reads the letter from the state officials. Their lobbying effort bolsters Aldeson, who is dipping into his…