See Bill of rights. Check it out for yourself. Maybe your lawyer has a copy of Black's he'd lend you. In Constitutional Law, and in the Law of Contracts. A permission, accorded by a competent authority, conferring the right to do some act which without such authorization would be illegal, or would be a trespass or a tort.
Several questions ought to come to mind.
Most adult Americans hold a driver's or operator's license. Some of you want to chase that rabbit. But, with the foregoing as a foundation, there is yet another very important license to consider. The marriage license. It wouldn't be.