Americans have been expressing their dismay at Jack Lew's "ridiculous" signature, which is likely to end up on newly printed dollar bills.
Mr Lew is expected to be named by Barack Obama as the new treasury secretary, who is perhaps best known in the US for signing, electronically, every banknote printed while holding the post.
His signature is a series of swirls and looks a bit like a coiled spring.
The New York Times has suggested he change his penmanship - but a petition has sprung up calling for Mr Lew's signature to be protected.
Emma Bache, a graphologist, said that he should not change his signature.
"A signature is how you want to be perceived by other people - it's not necessarily what your personality is about.
"This signature in particular is quite interesting - it looks to me like a bit of a mask."
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