As an American, I'd like to express my regret that your question is necessary.
If your friends plan to visit San Francisco, where I live, please encourage them to contact me. You can Google me to see that I'm not a troll and to get my email address.
IMO you would be best off voting with your feet/wallet and avoiding the US for tourism purposes anyway. The "Trump Slump" may have some effect frommers.com/tips/miscellaneous/…
@Omegacron I didn't post any political opinions. Well, not any of my own, anyway. I merely pointed out what one of the candidates said and how many people voted for him. In contrast, you described the two major candidates as "equally bad", which is certainly you expressing a political opinion. Finally, you may have noticed that Muslims travelling to the US has become a hot political issue right now: travel is politics, at the moment.