Regarding the idiom "Cut the Mustard". This site lists it as a UK idiom. I was born in the US, and I've been hearing (and using) that one all my life. "Cut the Mustard" is certainly an American idiom as well.
Regarding the idiom "Cut the Mustard". This site lists it as a UK idiom. I was born in the US, and I've been hearing (and using) that one all my life. "Cut the Mustard" is certainly an American idiom as well.