The barred trainer Jorge Navarro, who faces a five-year maximum prison term after pleading guilty in August to one count in a years-long Thoroughbred drugging conspiracy in exchange for having a similar second count against him dismissed, on Friday asked the federal judge who will sentence him Dec. 17 for a variance that could bring the most time he would spend behind bars down to about 3 1/2 years. Navarro, through a sentencing submission report filed by his legal team Dec. 3 in United States District Court (Southern District of...