It’s weird: the link brings me to a summary of the case, and not the quote, and although googling the quote also directs me to that page, not not even the cached version of the search result gives the quote. At any rate, it’s clear from the quote that Scalia said this in oral argument and not in his opinion. Eventually found a [transcript][1].
That aside, I do thank you for the interesting information.
[1]: http://www.supremecourt.gov/oral_arguments/argument_transcripts/04-277.pdf
