Originally Posted by
televisor
I've found a screenshot that would seem to contradict you (and also matches my memory):
http://i2.wp.com/milestomemories.boa...nt-System4.png
From:
http://milestomemories.boardingarea....l-entry-part2/
I.e. yes the application asks you for citizenship information, and allows you to add multiple citizenships.
I'm on a phone right now so I can't get into GOES, but I'm pretty sure when I view my profile there's a separate "citizenships" section in addition to the travel documents section.
I don't disagree that many CBP officers either don't care and/or explicitly don't want the second citizenship, and if applicable a passport, but other officers (e.g. the one who interviewed me) do want a full record.
That screenshot does n
t at all say that one
must disclose all citizenships. It provides the opportunity to disclose whichever ones one wishes to. The only thing that is mandatory is that one must enter the details of at least one citizenship and at least one passport for each citizenship listed.
As far as entering the US is concerned, if one is a US citizen additional citizenships are irrelevant. The US does not recognize them -- US citizens are required to enter on their US passports. As noted above, a US citizen can certainly have multiple US passports and entering data for all them could prove useful.