Twin cities of the border

Spanish is spoken as much as English is here near El Paso, and my
second language of Japanese isn't coming in as useful as I'd like,
other than to yell "urasai!" at barking dogs. Of other interest, today
I met a very kind shopkeeper in a very small farm town near the Rio
Grande. He told me that he meets many Germans who pass by on the same
bicycle route, and that he'd like to visit that country, but that he's
afraid the folks over there wouldn't like Americans, because of World
War II. I was shocked to hear of such a thought, and I guess that's
why Mark Twain was so adamant to proclaim that "travel is fatal to
bigotry and ignorance" or something as such.