What you should be asking is whether there is a hacker agency to protect you from Government.
Environmental Protection Agency in the US.
The US Patent and Trademark Office.
norad
In the United States ~ US Patent Office
The official propaganda agency of the US does not exist. The US government does not have a designated agency for propaganda.
None. The question is not about rights, it's whether or not the federal government is the sole agency allowed to protect the US from invasion.
US Environmental Protection Agency or E.P.A.
Too many.
department
fcc
the Department of Defense
That would be the EPA aka the Environmental Protection Agency.