MOSCOW (Reuters) - U.S. Ambassador to Russia Jon Huntsman has been forced to cancel a planned trip to Russia s Far East next week because senior regional officials could not find time to meet him, the U.S. Embassy to Russia said in a statement on Friday. The United States has a consulate in Vladivostok in the Russian Far East and the embassy said his planned visit was part of a series of trips to places where the U.S. hoped to resume consular operations which were suspended earlier this year amid a diplomatic dispute. 