[pizza]

Not the same.

> Congress is prohibited from passing ex post facto laws by clause 3 of Article I, Section 9 of the United States Constitution.

https://en.wikipedia.org/wiki/Ex_post_facto_law#United_State...

[sturadnidge]

That is not the case in UK however, which is where I'm drawing my (outlier, going by Wikipedia) experience.

[pizza]

Fair enough, that's pretty interesting actually