The operative word is "illegal" and if they were using falsified documents to work then they have broken even more of our laws. The example of an illegal working for years using falsified documents is a red herring. How many do that compared to getting paid under the table and paying no taxes. What is the ratio 1/1,000 or 1/10,000 or 1/100,00 or 1/1,000,000. While citizens and legals it is 1/1.