The American idiom gone missing?

Here's an interesting article about the lack of the equivalent of phrases like "at the end of the day", "at university" and "gone missing" in American English.

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Could we, like, pass a law in the U.S. against using British expressions? Now that we have BBC America things will really get out of hand.

Watch out for young people screaming "Brilliant!" at each other. There is currently a series of Guiness TV adverts in the U.S. that feature two guys doing just that, as they engage in positive Guiness-related activities such as inventing the six-pack, drinking responsibly, etc.