One would think just from a work reduction standpoint, that any system that is accurate and factual would gain advantage. Unless someone has a reason they don't want to use it...

e-verify has been extremely effective in curbing illegal immigration. It is an extremely easy system to use, you can even e-verify yourself. I see many businesses where I live posing "We use e-verify" on their doors. Since it's not expensive or time consuming for employers, I don't get why everyone just doesn't replace their regular I-9 paperwork with e-verify.