Answer:
The Court ruled that Congress could regulate labor relations at a manufacturing plant
Explanation:
NLRB v. Jones & Laughin Steel Corp, 301 U.S. 1 (1937) held that "Congress could regulate labor relations at any manufacturing plant operated by an integrated manufacturing and sales concern because of the serious effect that a work stoppage would have on an interstate commerce"
Reference: Shaman, J. M. (2001). Constitutional interpretation: illusion and reality (No. 97). Greenwood Publishing Group. p.60