Cartoonist in America wearing fancy dress (2,5)

I believe the answer is:

dr seuss

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'cartoonist' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'america wearing fancy dress' is the wordplay.
'america' becomes 'US' (United States).
'wearing' is an insertion indicator.
'fancy' indicates anagramming the letters.
'dress' with letters rearranged gives 'drses'.
'us' placed inside 'drses' is 'DR SEUSS'.

'in' acts as a link.

Can you help me to learn more?

(Another definition for dr seuss that I've seen is " Writer".)

I've seen this clue in The Independent.

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