Dogs and crossing the border

Hey folks, down visiting our family in Vancouver, Canada, we have our Nexus' and we are planning on doing a day trip down to Bellingham and we usually bring our 2 dogs, however in the summer they announced some sort of change where you need some sort of form, however when I spoke to the vet they didn't know much about it. They directed me to the CDC website, and I went through the whole form but it looks like it's only if you're planning on staying in the US, and only if you're from a country that's got a rabies concern... Can anyone give me some more information on this?

Thanks!