Pete Sessions (R. Texas) and Michael Lawler (R. NY) are asking US District Court Judge Pamela Chen to give "full and fair consideration of the unique circumstances surrounding Michael McMahon's case," according to a joint letter from the two lawmakers filed last week in New York's Eastern District court. McMahon, a former hero cop turned private investigator convicted of spying for the Chinese government, faces more than seven years in prison at his sentencing next week, The Post has learned.