Prosecutors in the racehorse doping conspiracy case that ensnared 29 racetrackers, veterinarians and pharmaceutical brokers one year ago tried to convince a federal judge Friday that recent motions made by some of the defendants to dismiss drug alteration and misbranding charges are "without merit" and represent "an effort to invent a statutory limitation where none exists." The government's memorandum of law filed Mar. 5 in United States District Court (Southern District of New York) addresses a number of alleged legal flaws in the defendants' motions to dismiss, including several that...