Cameron Miranda
Ex post facto laws are legal provisions that retroactively change the consequences of actions committed before the law's enactment. In criminal law, this can mean criminalizing actions that were legal in the past, aggravating a crime by bringing it into a more severe category, altering evidentiary rules, or extending the statute of limitations. The United States Constitution prohibits ex post facto laws in Article I, which bars Congress and state legislatures from enacting such measures. The Supreme Court has clarified the scope of this prohibition through landmark cases such as Calder v. Bull and Beazell v. Ohio, specifying that it primarily applies to criminal laws to prevent harsher penalties after the fact. The prohibition against ex post facto laws is intended to protect individuals from government overreach and arbitrary punishment, ensuring that individuals cannot be punished for acts that were not illegal when committed.
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What You'll Learn
Ex post facto laws are prohibited by Article 1 of the US Constitution
The prohibition against ex post facto laws was established to protect individuals from potential government overreach and arbitrary punishment. The US Constitution, in Article I, Section 9, bars Congress from enacting such measures, and in Article I, Section 10, applies this prohibition to state legislatures. This distinction between civil and penal laws was central to the Court's decision in Smith v. Doe, upholding Alaska's "Megan's Law", which requires released sex offenders to register with local police and provides for public notification.
The Supreme Court has clarified the scope of this prohibition through landmark cases, determining that it primarily applies to criminal laws. Notable cases include Calder v. Bull, which provided an alternative description of the four categories of ex post facto laws, two of which related to punishment. The Court ruled that laws imposing punishment where none was previously prescribed or imposing greater punishment than was authorised when the crime was committed are prohibited as ex post facto.
Another significant case is Beazell v. Ohio, which addressed changes in laws regarding evidence and held that alterations that disadvantage the defendant in a limited and unsubstantial manner are not prohibited. The Court has also ruled that laws reducing a prisoner's "good time" credits, thereby extending their punishment, are prohibited, while those acting to the defendant's benefit are allowed.
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Article 7 of the European Convention on Human Rights
Ex post facto laws are prohibited by the US Constitution because the Founding Fathers believed that such laws are unjust. These laws can be used to target specific individuals or groups, and they can also create uncertainty and make it difficult for people to plan their actions. In the US, ex post facto laws are prohibited by the Constitution's Article I, Section 9, Clause 3, which states that "No Bill of Attainder or ex post facto Law shall be passed".
The ECHR's Article 7 states that:
> "No one shall be held guilty of any criminal offence on account of any act or omission which did not constitute a criminal offence under national or international law at the time when it was committed. Nor shall a heavier penalty be imposed than the one that was applicable at the time the criminal offence was committed."
This article ensures that individuals are not punished for acts that were not criminal at the time they were committed and that the penalties applied are not more severe than those that were in place at the time of the offence. This provision is similar to that found in Article 15(1) of the International Covenant on Civil and Political Rights, which states that "nothing shall prevent the trial and punishment of any person for any act or omission which, at the time when it was committed, was criminal".
The implementation of retrospective criminal laws is prohibited by the Covenant, which Australia is a party to. Similarly, Brazil's Constitution states that laws cannot have ex post facto effects on acquired rights, accomplished juridical acts, or res judicata. France also has a similar exception when retroactive criminal laws benefit the accused person. In Canada, ex post facto criminal laws are constitutionally prohibited by the Charter of Rights and Freedoms.
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Article 15(1) of the International Covenant on Civil and Political Rights
Ex post facto laws are prohibited by the US Constitution because they are seen as unjust and contrary to the rule of law. These laws apply retrospectively, changing the legal consequences of actions committed before the law's enactment. This means that an individual can be punished for an action that was not illegal when they committed it.
The prohibition of ex post facto laws is a key protection of individual rights and ensures legal certainty. It prevents the state from arbitrarily changing the legal consequences of actions after they have been committed. This is an important safeguard against abuse of power and ensures that individuals are aware of the potential consequences of their actions before they take them.
Some nations with a Westminster system of government may allow ex post facto laws due to the principle of parliamentary supremacy. However, in countries with a bill of rights or a written constitution, such as the US, these laws are generally prohibited. The ICCPR, which most states in the world are party to, provides an international framework for protecting against ex post facto laws and ensuring respect for civil and political rights.
The prohibition on ex post facto laws does not affect the validity of a law regarding subsequent offenses. Additionally, a statute that mitigates the severity of a previous law or penalizes the continuation of conduct begun before the new law is not considered ex post facto.
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Article 9 of the American Convention on Human Rights
Ex post facto laws are prohibited by the US Constitution because the Founding Fathers believed that such laws were unfair and unjust. These laws can be used to criminalize actions that were legal when committed, increase the severity of a crime after it was committed, or change the punishment for a crime after it was committed. Such laws can also be used to extend the statute of limitations or alter the rules of evidence to make a conviction more likely.
Now, here is some detailed information about Article 9 of the American Convention on Human Rights:
The American Convention on Human Rights was drafted primarily by the predominantly Roman Catholic nations of Latin America and has been ratified by 13 nations. It aims to consolidate a system of personal liberty and social justice based on respect for the essential rights of individuals. The Convention is overseen by two bodies: the Inter-American Commission on Human Rights and the Inter-American Court of Human Rights, both organs of the Organization of American States (OAS).
While the Convention upholds important rights, it has been criticized for containing anti-abortion provisions in Article 4.1, which states that every person has the right to life "in general, from the moment of conception." This conflicts with the legality of abortions in some countries, such as Canada, and has been a barrier to the ratification of the Convention by certain states.
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Ex post facto laws are tools of oppression
Ex post facto laws are legal provisions that retroactively punish individuals for actions that were not illegal at the time they were committed. In other words, they change the legal consequences or status of actions that were committed before the law was enacted. These laws are prohibited by the US Constitution, specifically in Article I, where Congress and state legislatures are barred from enacting such measures.
The prohibition against ex post facto laws was established to protect individuals from potential government overreach and arbitrary punishment. The US Constitution's authors regarded these laws as tools of oppression. This is because ex post facto laws can be used to retroactively criminalize behaviour, aggravate a crime by bringing it into a more severe category, change punishments, extend the statute of limitations, or alter evidentiary rules to make convictions more likely.
For example, in Calder v. Bull, Justice Chase gave an alternative description of four categories of ex post facto laws, two of which related to punishment. The first category was laws that inflict punishment "where the party was not, by law, liable to any punishment". The second category was laws that inflict greater punishment than was authorized when the crime was committed.
In another case, Beazell v. Ohio, the Supreme Court held that changes in laws regarding evidence that "operate only in a limited and unsubstantial manner to [the defendant's] disadvantage, are not prohibited". This case clarified that the prohibition against ex post facto laws does not attach as strictly to judicial decisions as it does to legislative decisions.
Outside of the US, ex post facto criminal laws are prohibited by the Charter of Rights and Freedoms in Canada, the Constitution in Brazil, and the European Convention on Human Rights. While American jurisdictions prohibit ex post facto laws, European countries apply the principle of lex mitior ("the milder law").
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Frequently asked questions
An ex post facto law is a law that retroactively changes the legal consequences of actions committed before the law was enacted. In criminal law, this could mean criminalising actions that were legal in the past, or increasing the severity of a crime after it was committed.
Ex post facto laws are prohibited by the US Constitution to protect individuals from potential government overreach and arbitrary punishment. The Constitution bans Congress and state governments from passing such laws.
In Calder v. Bull, the Supreme Court deemed ex post facto laws unconstitutional, specifying that they apply only to criminal, not civil law. In Beazell v. Ohio, the Court allowed certain civil regulations with retroactive effects, as long as they did not disadvantage the defendant.
In some nations with a Westminster system of government, ex post facto laws may be possible due to parliamentary supremacy. Additionally, while American jurisdictions prohibit ex post facto laws, European countries apply the principle of lex mitior, or "the milder law".
