I'm an US citizen by nationalization and Colombian citizen by birth. I currently live in California. I'm planing to travel in November SFO-TLV-IST-SFO. I want to use my Colombian passport to travel to Israel and Turkey, since there are no visa requirements, and currently US citizens are not allowed to travel or get a visa to Turkey.
So I'm concerned that I will have issues when returning back to the US since there will be no stamps on my US passport. I heard a new regulation started that officers are supposed to check the stamps of the countries you visited. Please I need some guidance. Thank you.