US accidentally sent Maryland father to Salvadorian prison, can't get him back

It's not an accident if the government intentionally circumvents all checks that usually would apply to cases like this and denies them due process. It's also intentional that they send these people to a prison in a different country (and for most of them not the country they are originally from) with conditions that would certainly be illegal in the US itself.

This is also about more than just this single case. From the little we know so far it seems that being from Venezuela and having any kind of tattoo is sufficient to be targeted.

This isn’t an accident. They said they’d do this. People voted for this. This is what some people want to happen. No one should be surprised by this. On the campaign trail Trump promised to deport 20 million people. They’re aren’t 20 million undocumented people in the US. The only way you can deport 20 million people is to deport a lot people who have no reason whatsoever to be deported.