Read the article, he isn't jailed in the US, he's in jail in El Salvador. He has no connection to El Salvador, so he's being incorrectly incarcerated.
His family expected him in Venezuela where he is originally from. However much you might dislike someone in a country illegally, he shouldn't be sent to a random prison in a random country.
Edit: This is the issue with not following due process. He was incorrectly identified as a gang member.
Yeah it means that the four cards don't have to be contiguous. If you look at the wiki, it calls out the synergy between four fingers and shortcut as - any four cards A-10.