[Jorge]

I agree completely. Further to your point, ignorance of the law isn’t an exculpable consideration.

This isn't "ignorance of the law". Unless there is a law requiring employers investigate the ID and records for all prospective employees.

If this was the case many natural born Americans would have a hard time getting work as well.

[brityank]

Unless there is a law requiring employers investigate the ID and records for all prospective employees.

Google "I-9 employment form" -- it is required.