Many dual citizens have two passports. They use their US passport to travel from and to the US, but use their other passport for travel elsewhere. Having a passport from a EU country allows you to travel freely within the EU and you can work and stay for as long as you want.
You can denounce your citizenship in the other country similar to what Ted Cruz did with his birthright citizenship in Canada.
“You can denounce your citizenship in the other country similar to what Ted Cruz did with his birthright citizenship in Canada.”
I have no reason to renounce a citizenship and even if I were to renounce a citizenship, I can attain that citizenship once again by simply proclaiming that I am a citizen.
It’s that easy.
Effectively, I could walk into the embassy on Monday and renounce my citizenship and then go back to the embassy on Tuesday and proclaim my citizenship and do that every day for the rest of my life.