Immigration Flaws

I was talking to an employer about immigration. He said that if you call social security to try to verify an employee can legally work here - forget it. They can't tell you if someone is legal or not. We have computers that can tell if your credit card is working, but there is no such computer to verify someone's social security number. Without the ability to have employers screening for illegals, there is no way the situation can improve. Having the National Guard at the border has no impact on 12 million illegals already living here. I suggest the government computerize the system so social security numbers can be verified by employers. Right now, employers are told to "have a copy of their drivers license and social security number in a file" and that is considered "good enough."