Article One of the United States Constitution
In 1937, the Supreme Court began moving away from its laissez-faire attitude concerning Congressional legislation and the Commerce Clause, when it ruled in National Labor Relations Board v. Jones & Laughlin Steel Company, that the National Labor Relations Act of 1935 (commonly known as the Wagner Act) was constitutional. The legislation under scrutiny, prevented employers from engaging in "unfair labor practices" such as firing workers for joining unions. In sustaining this act, the Court, signaled its return to the philosophy espoused by John Marshall, that Congress could pass laws regulating actions that even indirectly influenced interstate commerce.