 This continued in the cow case, "Stafford v. Wallace", where the court articulated a "Stream of Commerce" test; essentially, Stream of Commerce conceptualizes commerce as a flow mostly concerned with the transportation and packaging of goods and not including acquisition of raw materials at the front end and retail of those goods at the tail end.However, with the Great Depression, there was political pressure for increased federal government intervention and the Court increasingly deferred to Congress.A seminal case was "NLRB v. Jones and Laughlin" where the Court adopted a realist approach and reasoned that interstate commerce is an elastic conception which required the Court to think of problems not as falling on either side of a dichotomy but in a more nuanced fashion.