You might want to take a look at the rules governing the denaturalization process. Membership in subversive groups such as al-Qaeda or Caucasus Emirate, or failing to testify regarding suspected subversive activities is grounds for USCIS to revoke one's naturalization.
So perhaps you should drop the faux-outrage and gain a better understanding of immigration law. I recommend you start with 8 U.S.C. § 1451 which states, in part:
"If a person who shall have been naturalized after December 24, 1952 shall within five years next following such naturalization become a member of or affiliated with any organization, membership in or affiliation with which at the time of naturalization would have precluded such person from naturalization under the provisions of section 1424 of this title, it shall be considered prima facie evidence that such person was not attached to the principles of the Constitution of the United States and was not well disposed to the good order and happiness of the United States at the time of naturalization, and, in the absence of countervailing evidence, it shall be sufficient in the proper proceeding to authorize the revocation and setting aside of the order admitting such person to citizenship..."
Now, maybe the "within five years" part will be his saving grace, but that doesn't change the fact that naturalized citizens can indeed have their citizenship revoked for gross buffoonery.
Edited to add the citation.