Can I Lose My Admissibility by Falsely Claiming Citizenship?

It is illegal for an individual who has falsely claimed to be a citizen of the United States of America after September 30, 1996, to come to the United States without a United States Waiver. Federal law, in the Immigration and Nationality Act, permanently prohibits them from entering the country. People who are falsely claiming to be US citizens will be banned from the country for life, and there is no circumstance where the US would issue a Travel Waiver, except for extreme cases.