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I couldn't find very much information about this strip. Even the Comiclopedia entry for the cartoonist, Bill Williams, doesn't mention it at all. It ran from 1965-1971, and appears to be about the woman that Santa is speaking to, Dolly. From the few strips I saw, she seems to work a variety of different jobs, possibly because she's not very good at keeping them. I'm not sure exactly why Santa would need to go through Customs, unless his flying reindeer were unavailable somehow and he had to take a plane. I guess even magical reindeer need a sick day now and then.