Apple Inc’s antitrust compliance program has improved, but the company continues to impede a court-appointed monitor overseeing the program, acting as “its own worst enemy,” the monitor told a federal judge in a report made public on Tuesday. Michael Bromwich, who was assigned to monitor Apple’s internal antitrust policies after U.S. District Judge Denise Cote found the company liable for conspiring to raise e-book prices, said Apple persisted in raising objections to his requests for information. “In this respect, Apple has been its own worst enemy,” he said.