Discussion Forum—A Way with Words, a fun radio show and podcast about language

Is that expression mostly British and Australian?

In the first few pages of J.K. Rowling's new novel, a middle age man dies unexpectedly, and one guy keeps saying 'It goes to show...' on and on.   It's like some opaque milk from, like:

        'It's humbling how the world works'

        'It proves what I always said'

        'It's a life lesson though I have no clues what that is.'

Is it true that Americans seldom use it at all?