CAIRO - President Barack Obama has invited Egypt's newly elected president, Mohamed Mursi, to visit the United States in September, an Egyptian official said on Sunday. "President Obama extended an invitation to President Mursi to visit the United States when he attends the UN General Assembly in September," Egyptian aide, Yasser Ali, said after Mursi met US Deputy Secretary of State William Burns. Burns did not mention the invitation at a news conference earlier. Washington shifted policy last year to open formal contacts with the Muslim Brotherhood, the group behind Mursi's win. Mursi formally resigned from the group when he won the presidency.