ASVAB Armed Services Vocational Aptitude Battery (#63)

Section: Paragraph comprehension

An ex-post-facto law is a law applied retroactively. Usually it makes an act illegal that was legal at the time it was performed. The U.S. Constitution prohibits ex-post-facto criminal laws, although the British Commonwealth allows them. According to this passage, it can be assumed that:

Ex-post-facto laws are a problem in the United States.
Laws applied retroactively are fair.
A person could be prosecuted for an act that was not a crime when he or she did it.
Retroactive laws are illegal in the British Commonwealth.