As a US citizen not charged with or convicted of any federal crime, it would be completely illegal for the US government to arrest me, deport me, and hand me over to the government of El Salvador to be indefinitely imprisoned there. But, such things have been known to happen to people to whom they legally may not, due to "administrative error", so it's not inconceivable that they could happen to me. And the current policy of the federal government seems to be that, when these things do happen without legal justification, the government has no obligation to undo them and no court has the power to order the problem solved.
Can I then sue for injunctive relief to solve this problem in advance, on the basis that, if it were to actually happen, relief would be impossible after the fact? Or would I need to have some higher-than-background likelihood of this particular problem happening to me personally in order to have standing to sue? Or some evidence that fact that this could happen to me was creating some kind of impermissible chilling effect on me in particular?
(I don't imagine an injunction prohibiting administrative errors would be terribly useful, but there are other potential things that could be ordered that would prevent the problem from occurring. This question isn't meant to be about the practicality of particular ideas for injunctions, but rather whether I would have standing to sue for something here at all.)