false
passing ex post facto laws
Assuming this is about the united states, to pass an ex post facto law is no kind of power, it is prohibited by the constitution.
Ex post facto laws are specifically prohibited by the Constitution.
Ex post facto laws are laws that act retrospectively. The law changes the legal consequence of an action that was committed before the enactment of the law. For example, an action that was not criminal in 1990 may be regarded as a crime if new legislation is passed to ban the action.
ex post facto laws and Bills of Attainder
false
Ex post facto :)
Ex Post Facto Laws (after the fact)
passing ex post facto laws
Congress can't pass ex post facto laws, which prohibit something retroactively, meaning something that has already happened. Bills of attainder, which declare people guilty without a trial, are also forbidden.
Assuming this is about the united states, to pass an ex post facto law is no kind of power, it is prohibited by the constitution.
Bills of Attainder
Officially, they're called the Ex-post Facto laws, detailed in Section 9 of the Constitution.
In the United States, Congress is forbidden of passing what is known as "Ex Post Facto Laws." The United States Supreme Court uses the case of Calder v. Bull in which they ruled that prohibition applied only to criminal, not civil cases to decide ex post facto challenges.
Prohibited by Article 1 Section 9 of the U.S. Constitution
Acts forbidden to Congress include the ability to suspend writs of habeas corpus and to pass ex post facto laws. In addition, Congress is forbidden to take money from the treasury without a legal reason.