WhichWay2Go
Registered Users (C)
I am Filipino and I think it's legal and allowed to have a dual citizenship.
Congratulations dude. Thanks for the detailed report of the interview. I love practicing those questions.
Dual Citizenship. If the Philippines allows it then you probably need to do nothing but it would pay to check check with the Consulate. Start here...
http://www.gov.ph/
With dual you can use either the PI passport or the US Passport to leave here. There is no connection between the Passport you used to leave with the one used on arrival. It is two different countries.
When you arrive in PI you can again use either Passport but the US one will only get you 21 days stay unless you have a valid PI Visa for a defined length of stay. In your case I would use the either Passport to leave here and enter PI with the PI one. That way you can stay as long as you like. That's the great benefit of multiple Citizenship. You are not a visitor in your country of birth.
Coming back you will have to use your US Passport in order to leave and also get back into the States. The airlines (not the PI Government) will not let you check in without a US Passport, GC or valid US visa stamp in your PI Passport.