The government can overrule the work of the FCC in theory but rarely does.
Explanation:
The Federal Communications Commission is one of the few independent agencies that work in the United states government that regular the communication in the nation by radio. television. wire or even satellite and cable
Due to their centralized control over all forms of media it is the FCC that would ave to decide if keeping the Net neutrality was viable or was it not vial for the nation.
If they have decided against then the government rarely overrules.