Register Your UAS (Drone) - Reinstated
Congress passed and the President signed a bill that requires operators of small unmanned aircraft systems (UAS) also known as drones to register their aircraft on with the FAA.
The FAA had required registration but it was opposed by the toy aircraft lobby which took it to court and had it blocked. So, the FAA went to Congress and the President and had it reinstated.
You have to register the UAS before you fly it. There are no pilot requirements if flying for fun, but if flying for work, and checking your cows or crops is work as far as the FAA is concerned, you need a remote polite certificate.
Here is a quick overview of FAA requirements.