About U.S. Government Works
U.S. government creative works are usually produced by government employees as part of their official duties. These works include writings, images, videos, and computer code. A government work is generally not subject to copyright in the U.S. Unless the work falls under an exception, anyone may, without restriction under U.S. copyright laws:
Reproduce the work in print or digital form
Create derivative works
Perform the work publicly
Display the work
Distribute copies or digitally transfer the work to the public by sale or other transfer of ownership, or by rental, lease, or lending