Quite a few people in the US have an aversion to eating raw meat, including sushi. Any mid range restaurant is going to offer more than just sushi so that there's something for everyone when a group wants to go out to eat.
Heh, it probably would have been more shocking a generation or two ago. My mom liked to joke that her mom would overcook pork chops so badly that they would shatter if you dropped them. She was terrified of trichinosis, probably at least partially justifiably so.
In fact, I'd never even heard of eating pork as anything other than well-done until I saw Gordon Ramsay cook a pork chop medium rare.