Possible loss of US citizenship.. <A HREF="http://travel.state.gov/loss.html" target="_new">http://travel.state.gov/loss.html</A> US Citizenship & Nationality.. <A HREF="http://travel.state.gov/acs.html#cit" target="_new">http://travel.state.gov/acs.html#cit</A> Renunciation of US Citizenship.. <A HREF="http://travel.state.gov/renunciation.html" target="_new">http://travel.state.gov/renunciation.html</A>