Just returned from my first trip to the states in almost 2 years. It was part work and part visit with family, so it wasn't that bad.
Since I only picked up snuff since being overseas I had no experience finding it in the states- gladly I started in Virginia and was able to find several dry scotches at several grocery stores. I had to peek and poke to find it, but there it was. As I went into the Carolinas I was impressed by the number of gas stations that carried it as well as a few "outlets" along I-95 (to include the JR chain) that had it in bulk.
As I continued west through Texas and New Mexico it became more rare to see at any shops. I eventually ended up in California and almost gave up on finding any snuff until I wandered into a very nice cigar shop and found an entire shelf lined with various scents from Silver Dollar. A real win as I had exhausted my traveling supply of Hedges and McChrystals, as well as the few Gawith Apricot tap boxes I brought along.
Dutifully I stocked up on a few cans of American dry's and tucked them into my luggage for my trip back to Japan. I figure I will stash them away and visit with them from time to time.
Never got any "funny" looks taking a snuff while in the states nor on my flights there and back.