Price would decrease
Most of the controls over driving licenses in the United States is done at the state level. Each state has a Department of Motor Vehicles or equivalent. In a few states the issuance of licenses is at the county or town level (New Hampshire is an example). The federal government has issued certain guidelines for states to follow but they do not have the full force of law. For example, the federal government has requested that states verify citizenship when issuing licenses, but many states do not do this.
The state DMV issues licenses.
Some services that the Florida Department of Motor Vehicles provides are the creation and distribution of various vehicle licenses. You can use these licenses to drive cars.
The group that controls these things is known as the ICC.
The government issues mobile-phone licences.
Marriage licenses are issued by the state. In most cases the state has directed the county handle the registration.
Only to members of the US military to drive military vehicles. States issue regular driver's licenses.
One example would be a hunting licenses.
Each individual state makes their own laws about marriage licenses. These laws then authorize town, city and/or county clerks in that state to issue marriage licenses to qualified applicants.
You can find all requirements for CDL licenses at www.fmcsa.dot.gov. This is the government website for motor carriers, and explains all the types of licenses and what you need to do to get them.
WHICH license? Driver's licenses are regulated by the states, not the Federal Government. As are, actually, most other licenses. So it depends more on what state you live in.
You cannot without proper licenses from the United States Federal Government.