I am abroad but I will return to Us within a short time, Do I need an entrance permission from Us embassy?

I've just recently been a dual citizen. American and another country. I've recently received Us citizenship. Do I need an entrance permission to enter Us or Am I free to enter without anything since I am already Us citizen now?

You need entrance permission
You don't need anything you're already Us citizen. You're free to enter
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I am abroad but I will return to Us within a short time, Do I need an entrance permission from Us embassy?
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