I gather there is a fair amount of Moroccans living in the States of the United States but they are geographically dispersed and the country is so huge as you know. As someone mentioned earlier, racism exists anywhere but in the U.S. it is usually between black and white. We Moroccans look like Mexicans and/or Spanish in general, some look like Italians

and so it’s hard to tell unless someone talk to you.
In general, American people are humble and friendly; they don’t judge you based on race or religion more than they do based on your personality. So it all depends on you; if you have communication and interpersonal skills, willing to learn the culture and integrate in the American society, then you are good to go, otherwise you can be very much isolated during your entire stay in the U.S.A

Hope this helps.
Should you have any question pertaining to this matter; please email me
akarrech2000@yahoo.com
Adam