MIAMI — A British Virgin Islands premier was acting like the fictitious CIA agent Jason Bourne when he was approached by a Mexican cartel member about using his ports for shipping cocaine to the United States, a defense attorney said Thursday at the politician’s drug-trafficking trial in Miami. Andrew Fahie then took role-playing as Bourne even further when he agreed to accept millions in bribes from the trafficker so the BVI premier could uncover whether the smuggler was out to destroy him on behalf of the British government that controls the Caribbean territory, his lawyer said during closin…