I am a new US citizen and need to use my US passport to travel to Brazil since I need to show proof of residency and I no longer have my green card that goes with my Cyprus passport. However, I can enter Brazil visa-free with my Cyprus passport and would like to be able to do that rather than getting a visa on my US passport.
My question: Can I depart the US with my US passport and enter Brazil with my Cyprus passport? Or, will the US airline agents demand to see a visa if I'm using the US passport? Will they be OK if I tell them I'm using the Cyprus passport to enter Brazil?
I'd appreciate your help in figuring this out. Thanks much! Stephan