he allowed it to die in the Senate. Nevertheless, Arthur Link has called it "a turning point in American constitutional history" because it attempted to establish for the first time "the use of the Commerce Clause commerce power to justify almost any form of federal control over working conditions and wages." In 1916, Senator Robert L. Owen of Oklahoma and Representative Edward Keating of Colorado introduced the NCLC backed Keating-Owen Act which prohibited shipment in interstate commerce of goods manufactured or processed by child labor. The bill passed by a margin of 337 to 46 in the House and 50 to 12 in the Senate and was signed into law by President Woodrow Wilson as the centerpiece of The New Freedom Program. However, in 1918 the law was deemed unconstitutional by the United States Supreme Court in a five-to-four decision in Hammer v. Dagenhart. The court, although acknowledging child labor as a social evil, felt that the Keating-Owen Act overstepped congress' power to regulate trade. The bill was immediately revised and again deemed unconstitutional by the Supreme Court. The NCLC then switched its strategy to passing of a federal constitutional amendment. In 1924 Congress passed the Child Labor Amendment with a vote of 297 to 69 (with 64 abstaining) in the house and 61 to 23 (12 abstaining) in the senate. However, by 1932 only six states had voted for ratification, while twenty-four had rejected the measure. Today, the amendment is technically still-pending and has been ratified by a total of twenty-eight states, requiring the ratification of ten more for its incorporation into the Constitution. In 1938 the National Child Labor Committee threw its support behind the Fair Labor Standards Act (FLSA) which included child labor provisions designed by the NCLC. The act prohibits any interstate commerce of goods produced through oppressive child labor. The act defines "oppressive child labor" as any form of employment for children under age sixteen and any particularly hazardous occupation for children ages sixteen to eighteen. This definition excludes agricultural labor and instances in which the child is employed by his or her guardians. On June 25, 1938, after the approval of Congress, President Franklin D. Roosevelt signed the bill into law; the FLSA remains the primary federal child labor law to this day. For the entirety of World War II, the NCLC served as a watchdog to ensure that employment shortages caused by the