Why do Americans never want to be English?

Will Smith has just claimed he's Welsh based on the fact he grew up in an American town with a Welsh name, Bryn Mawr. Some how he made it through his entire life without asking what the name meant or it's origin. The Welsh government have written to Mr Smith asking for an apology and retraction.

But he's not the only one. Trump claims to be Scottish despite hating Irn-bru, never wearing a kilt, or eating a battered Mars bar. The closet Biden ever came to being Irish is impersonating a potato for 4 years.

You'll often see Americans claim to be Welsh, Scottish, or Irish, often basing their claims on distant ancestors. BUT you rarely see one boasting about being English. Why is that?
Why do Americans never want to be English?
Why do Americans never want to be English?
Why do Americans never want to be English?
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