I would not assume pure malice in this case. The whole trifecta between the fed, the state and the state DMV is just complete spaghetti and need serious reform. The idea of state level drivers' licenses is really short sighted
This is not a matter about it being law but rather how poorly these systems mesh together thanks to government at all levels in the US being years behind Euro counterparts partially due to legislation barriers and probably cronyism
And yet, you do need meshing to know whether or not they have work authorization. Would recommend taking a minute to really think about what people are saying to you, instead of jumping to asinine, teenage bullshit like "excuse denied".