Government prosecutors took an unusual series of legal actions late Monday, seeking to prevent the case of two pro-life supporters of James C. Kopp from going to trial before a federal judge in Buffalo. In Buffalo, they filed court papers to drop the charges they filed last year against Loretta Marra and Dennis Malvasi of Brooklyn, who are accused of helping Kopp avoid capture by the FBI after the sniper murder of an Amherst physician. In New York City, they filed a new, greatly reduced criminal charge against Marra and Malvasi. Essentially, prosecutors asked to have the case moved from...