she worked as a model under the HB2 visa, a tourist visa. She got caught, and moved to the "I didn't get paid for the modeling job..." She would be working illegally, even if exchanging modeling for exposure in a major magazine.
She will get away with it. Not a huge deal, but does undermine the donald a bit, sure. She didn't follow the rules that she harps on now.
The previous marriage which a trump lawyer admitted to - and she denied - that could be a bigger issue. She may still be legally married... left sites as asking about bigamy, etc.