It was either last year of the year before at AirVenture that I spoke
with the person responsible for posting the telephone numbers to the cbp
website. I explained how difficult was to find the contact telephone
numbers on the previous US Customs website.
It is now easier to find and hopefully kept up-to-date.
I would like to see it as a complete pdf file for download, although the
copy and paste text is easier to compile and format to each individuals
tastes.

Paul Tomblin wrote:
Let me put it this way: If US Customs set up a central number, they'd
make it a 800 number that you couldn't dial from outside the country.