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Questions tagged [ex-post-facto]

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13 votes
6 answers

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

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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