Saint Alphonsus Health System and Treasure Valley Hospital (TVH) have taken legal action to stop St. Luke's Health System from acquiring the Saltzer Medical Group in Nampa, alleging the acquisition would lead to a monopoly. Saint Alphonsus and TVH say that the acquisition would violate antitrust laws, creating a monopoly that would raise health care prices, suppress competition and cause layoffs at other health facilities. It asks a federal judge to issue an injunction prohibiting the sale of Saltzer to St. Luke's, as well as monetary damages.