The U.S. Congress would endanger the nation's security by passing even watered-down legislation to limit the National Security Agency's bulk collection of domestic phone records, several U.S. senators said Thursday. Several members of the Senate Intelligence Committee voiced opposition to the USA Freedom Act, a bill aimed at reining in NSA bulk collection of telephone and other records, even though many civil liberties groups and technology companies have questioned whether the bill would work as its sponsors originally envisioned.