EL PASO, Texas -- Luis Posada Carriles has tried to leave the United States but so far no one wants to let him in, his lawyers told a federal judge Monday. Canada, Guatemala, Mexico, Costa Rica and El Salvador have all rejected government requests to take Posada, an anti-Castro Cuban militant who was ordered to leave the United States last year. Posada's efforts with some of the same countries have also failed, a friend testified Monday. Miguel Jimenez, a friend of Posada's who made contact for Posada with "high level" officials in several Central American countries, told U.S. Magistrate Judge Norbert Garney that everyone said no. In Panama, where Posada once lived, a powerful lawyer with government connections said the people who could help Posada were now part of a federal probe into how Posada left that country in 2004, Jimenez said.