RAMALLAH, West Bank, June 16 (Reuters) - An American envoy told Palestinian President Mahmoud Abbas during a meeting on Saturday that the United States will lift a ban on direct aid to the emergency government he is forming following Hamas's takeover of the Gaza Strip, a senior Palestinian official said. "Abbas was informed the American administration will immediately lift the sanctions once the emergency government is announced," a senior Palestinian official said as Abbas met in the West Bank city of Ramallah with U.S. Consul-General Jacob Walles.