Bill, I see no reason why the receiver shouldn't work. And as far as Mapfactor shipping to the U.S., yes, they do. During the order process you will see a drop-down list of countries they deliver to. It is a bit confusing because first you see only the European countries listed alphabetically, and then after the last European country the rest of the world starts.
I wonder if they are losing sales to the rest of the world because of this. For example I was first going to check if Canada was on the list. I scrolled down to the letter C, and I saw only Croatia listed. If you scroll past the last European country, which is United Kingdom, then the rest of the world begins with Afghanistan.