New York (AP) — A dissenting group composed of some former members of the fledgling union that successfully organized an Amazon warehouse in New York has filed a lawsuit accusing the union of violating its own constitution and is asking a court to step in and force an election for union officers. The complaint, filed Monday in U.S. District Court of the Eastern District of New York, comes as the upstart Amazon Labor Union – the only certified group representing Amazon workers – struggles to capture the momentum that led to its surprising victory last year following a series of setbacks. Since that win, the group has lost union elections at two other Amazon facilities and abandoned a petition it filed to hold another vote at a third warehouse in California.