Missouri
How Calder v. Bull applies in Missouri: state-specific rules, key cases, and bar exam notes for Constitutional Law.
Missouri respects the substantive due process principles established in Calder v. Bull, particularly regarding the prohibition against ex post facto laws in both criminal and civil contexts. The state has elaborated on these principles to ensure that laws are not applied retroactively to the detriment of individuals.
In Missouri, the ex post facto principle prohibits legislation that would retroactively affect a party's vested rights or increase their liability under the law.
The Missouri Supreme Court held that a statutory amendment increasing penalties for past actions constituted an ex post facto violation.
This case reaffirmed that the prohibition against ex post facto laws applies to both criminal and civil legislative actions.
The court ruled that retroactive application of zoning laws negated pre-existing rights, reflecting the principles from Calder v. Bull.
Missouri's application of the principles from Calder v. Bull aligns closely with the federal ex post facto doctrine articulated in the U.S. Constitution. Both jurisdictions focus on the protection of vested rights through the prohibition against retroactive laws, although Missouri's courts have tailored their interpretations to local legislative matters.
Understanding the application of ex post facto laws remains crucial for the Missouri bar exam, particularly in questions addressing legislative changes and their impacts on established rights.