I personally believe that everyone in the USA should be protected via their Constitutionally mandated personal rights. That said there is nothing in the Constitution about giving asylum and that is the mandate of Congress. I personally believe that a well thought out quota system is needed. We can't take everyone in the world who wants to seek asylum here. That's simply not possible. No one who isn't a US citizen has a right to live here, it is strictly up to the US government to say how many in what time span.
The ACLU however is not defending people's unilateral right to live in the US. They are defending the right to due process and the ability to apply for humanitarian refugee status.
If it can be shown that undocumented immigrants were afforded those, then the ACLU hasn't gotten involved to the best of my knowledge.
