The Securities and Exchange Commission (SEC) brought a case against Central-Illinois Securities Corp. in 1948, alleging that the corporation had violated the Public Utility Holding Company Act of 1935 by engaging in fraudulent transactions. The SEC claimed that these transactions resulted in an unfair distribution of voting power among security holders and excessive charges for services rendered to subsidiary companies. The Supreme Court ruled in favor of the SEC, finding that Central-Illinois had indeed violated several provisions of the act through its business practices. However, it also held that not all violations were necessarily fraudulent or deceptive under common law standards; instead, they could be considered as such if they contravened specific prohibitions within securities laws themselves. This decision clarified how fraud was defined within this context and underscored regulatory agencies' authority to enforce compliance with federal securities legislation.

In the dissenting opinion for SEC v. Central-Illinois Securities Corp., Justice Jackson argued that the majority's decision expanded the powers of the Securities and Exchange Commission (SEC) beyond what was intended by Congress. He contended that while it is within the SEC’s authority to prevent fraud, deceit, or manipulation in securities transactions, it does not have a mandate to regulate fairness of corporate reorganizations as such matters should be left to state law or other federal laws specifically designed for this purpose. Furthermore, he expressed concern over potential abuse of power by administrative agencies if they are allowed unchecked discretion in determining what constitutes "fair" business practices without clear statutory guidelines. In his view, allowing such broad interpretation would undermine legal certainty and potentially stifle legitimate business activities due to fear of regulatory sanctions.