As a New Zealander, it amazes me that the US and Canada do not have closer relations with regards to customs and so forth. I understand that both countries are large, but this situation seems a little ludicrous.

I recently travelled to Australia on business - which, I suppose, is the larger neighbour in the same way the US is to Canada.

Through immigration and customs at both airports, I was never obliged to actually interact with a real person: only check-in machines, face scanners, and a quick walk past sniffer dogs.