Taken from the Form I-9 for hirees after Nov. 6, 1986:
Employers may or may not photocopy documents presented...[but] are still responsible for completing the I-9.
Anti-Discrimination Notice: It is illegal to discriminate against any individual (other than an alien not authorized to work in the U.S.)...
If you aren't doing this, Dog, you could be breaking the law.
I break the law every time I pass a speed limit sign.