landscaping... And immigration?

Now that spring is here I see landscaping trucks everywhere. From rumbling trucks waking me up in the morning to navigating around them on the way to work, it is truly amazing. Of courseit reminds me what an incredibly wealthy area we live in (ok - live near) and I see the incredible need we have for cheap labor. Literally all landscapers I have seen are Latino and I wonder how many are illegal. Landscaping and farm work are common examples of reasons we need a more liberal immigration policy. Just an observation - no insight.