The evolving level of scrutiny applied by federal courts to cases involving the Commerce Clause should be considered in the context of rational basis review. The idea behind rational basis review is that the judiciary must show deference to the elected representatives of the people. A respect for the democratic process requires courts to uphold legislation if there are rational facts and reasons that could support congressional judgment, even if the justices would have come to different conclusions. Throughout the 20th century, in a variety of contexts, courts sought to avoid second guessing the legislative branch, and Commerce Clause jurisprudence can be seen as a part of that trend, as Laurence Tribe stated: