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Questions tagged [ex-post-facto]

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13 votes
6 answers
9k views

Can someone be prosecuted for something that was legal when they did it?

This sounds similar to this question, which keeps being used in AI and web search queries: What if I did something that was a crime, but has now become legal? Can someone be prosecuted for something ...
user1867437's user avatar
10 votes
3 answers
4k views

Can penalties be increased retroactively by statutes?

Would a law retroactively increasing the penalties for a crime, but not criminalizing any formerly legal action, be constitutional, or would it be considered ex post facto?
Someone's user avatar
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