In the case Central States Electric Co. v. City of Muscatine et al., 1944, the U.S Supreme Court ruled in favor of Central States Electric Company (CSEC). The dispute arose when CSEC sold its electric distribution system to the city of Muscatine, Iowa under a contract that required the city to pay for electricity at rates specified by CSEC until they could establish their own power plant or source alternative supply. However, after purchasing and before establishing their own power plant, the city sought cheaper electricity from another supplier which violated their agreement with CSEC. Consequently, CSEC sued for breach of contract and was awarded damages by lower courts. The case reached Supreme Court on appeal where it upheld previous rulings stating that while municipalities have broad powers to act in public interest; these do not extend to breaching valid contracts without legal justification or due process. It further clarified that such actions can be considered unconstitutional as per Fifth Amendment if they infringe upon property rights without just compensation.

The dissenting opinion in the case of Central States Electric Co. v. City of Muscatine et al., 1944, argued that the majority's decision to uphold a lower court ruling allowing municipalization was flawed and inconsistent with previous rulings on similar matters. The dissenters believed that the city had not met its burden of proof to show it could provide equal or better service than the private company at an equivalent cost, which they considered a prerequisite for municipal takeover under Iowa law. They also contended that there were procedural errors in how evidence was presented and evaluated during trial proceedings, which should have resulted in reversal or remand for further fact-finding rather than affirmation by default. Furthermore, they expressed concern about potential negative impacts on investor confidence due to perceived unfairness towards utility companies if municipalities could seize their assets without adequate justification or compensation.