In the case of Civil Aeronautics Board v. State Airlines, Inc., 1949, the Supreme Court ruled in favor of the Civil Aeronautics Board (CAB). The dispute arose when CAB denied State Airlines' application for a certificate to operate as an air carrier on certain routes. The airline argued that CAB had exceeded its authority by considering factors beyond those explicitly mentioned in Section 401(g) of the Federal Aviation Act while making its decision. However, upon review, it was found that CAB's interpretation and implementation were consistent with Congress’s intent behind enacting this law - ensuring public safety and promoting efficient national transportation system through regulation of air commerce. Therefore, even though some factors considered by CAB weren't specifically listed under section 401(g), they were relevant to these broader objectives set out by Congress. Hence, Supreme Court upheld CAB's denial order stating it did not exceed statutory authority or abuse discretion.

In the dissenting opinion for Civil Aeronautics Board v. State Airlines, Inc., Justice Jackson argued that the majority's decision to uphold the Civil Aeronautics Board's (CAB) denial of a certificate of public convenience and necessity to State Airlines was an overreach of federal power. He contended that CAB had exceeded its authority by considering factors beyond safety and economic viability in denying certification, such as potential competition with existing airlines. Furthermore, he criticized CAB’s assumption that it could predict market outcomes accurately enough to justify limiting competition preemptively. Jackson also expressed concern about how this ruling might set a precedent for other regulatory agencies to limit free enterprise under the guise of protecting public interest.