Hello, German/US citizen here. I wonder Can I get U.S. entry stamp in my EU passport?
Currently based in Europe and planning on visiting U.S. for a few weeks.

Reason why asking:
I am planning on entering the U.S. using my US passport but I will carry my EU insurance policy which is tied to my german travel document, so I thought having an entry stamp here would be nice. Besides that I am really curious if such a request can be accepted.

Do you think the immigration officer can do me a favor here? I don't want to irritate any government official. It really would help is somebody could share his experience. Many thanks!