Southwest Credit Card

So my friend was in Vegas at the USAir gate waiting for his plane. A guy came over and offered a free t-shirt and free airline ticket voucher. So he signed up, thinking it was a gimmick to build brand loyalty.

A few weeks later, his credit monitoring service emailed him that there was an inquiry from Barclay's Bank. So he called and was told he had been issued a USAir Mastercard miles card. He was confused and angry that he'd been deceived. The huckster didn't even furnish a disclosure of fees. When he got the card, he noticed an annual fee of $79, which was also not disclosed either by the person in the airport (who didn't even mention it was a credit card application) or the phone rep, who talked him into keeping the card that had already been issued.

Can he cancel and have the inquiry removed? What is his recourse? Which state's laws have precedence in this case?
Thanks for the answers, so far.

Spock, there were no terms to read. If there were, he would have realized it was a credit card application and wouldn't have signed up.