buddy moved here from NY and they were going to ding him sales tax on everything he had, including his 74 Ford pickup.
He took in some copies of his utility bills to show that he was a legal resident of NY and they were satisfied with that.

Another hint. I no longer go to the DOL, I head to one of the contracted places. Everyone at the DOL has a chip on their shoulder and act like the NSA or CIA, have to inspect everything. Head into an independent and tell them whats up and they usually shrug it off and take care of business.