Grounds for Denaturalization
1.Falsification or Concealment of Relevant Facts: You must be absolutely truthful when filling out paperwork and answering interview questions related to the naturalization application process. Even if the U.S. Citizenship and Immigration Service (USCIS) fails to recognize any lies or ommissions at first, the agency may file a denaturalization action against you after citizenship has been granted. Examples include failure to disclose criminal activities or lying about one's real name or identity.
2.Refusal to Testify Before Congress: You may not refuse to testify before a U.S. congressional committee whose job it is to investigate your alleged involvement in subversive acts, such as those intended to harm U.S. officials or overthrow the U.S. government. This requirement to testify in order to maintain citizenship status expires after 10 years.
3.Membership in Subversive Groups: Your citizenship may be revoked if the U.S. government can prove that you joined a subversive organization within five years of becoming a naturalized citizen. Membership in such organizations is considered a violation of the oath of U.S. allegiance. Examples include the Nazi Party and Al Qaeda.
4.Dishonorable Military Discharge: Since you may become a naturalized U.S. citizen by virtue of serving in the U.S. military, your citizenship may be revoked if you are dishonorably discharged before serving five years. Reasons for dishonorable discharge, which must follow a general court-martial, include desertion and sexual assault.
Grounds for losing citizenship if born in US - conviction for treason or attempting by force to overthrow the U.S. government, including conspiracy convictions.