It's not a requirement that one become a US citizen in order to live and work legally in the U.S. However, I do agree that there should be a better way for unskilled foreign people to enter legally in the U.S. I've been a permanent resident (i.e.: 'green card' holder) for the past 22 years and I am not interested in obtaining U.S. citizenship for a variety of reasons. I entered legally, I pay taxes, I own property, I have a few degrees and I contribute to my community. Obviously, I am fluent in English. Again, nothing in U.S. law requires me to become a citizen, as long as I maintain my permanent resident status.