The US doesn't have a monopoly on immigration horror stories: Australian immigration illegally detained an Australian citizen for 10 months. [0] They illegally deported another Australian citizen to the Philippines, and when they discovered their mistake, their initial response was to cover it up rather than try to rectify it. [1]

[0] https://en.wikipedia.org/wiki/Cornelia_Rau

[1] https://en.wikipedia.org/wiki/Vivian_Solon