Steward Health Care CEO Ralph de la Torre filed a lawsuit Monday against a U.S. Senate committee that pursued contempt charges against him for failing to appear before the panel despite being issued a subpoena. The lawsuit, filed in federal court in Washington, named nearly all members of the HELP Committee, including Sen. Bernie Sanders, who chairs the committee which has investigated Steward's bankruptcy. The lawsuit claims that the lawmakers are unlawfully violating de la Torre's constitutional rights. It alleges that the members of the committee, by trying to compel de la Torre to answer questions about Steward's bankruptcy, are "collectively undertaking a concerted effort to punish Dr. de la Torre for invoking his Fifth Amendment right not to 'be compelled . . . to be a witness against himself.'"