Do people from small minority groups in the U.S. find it hard to find spouse from their culture?

I think it’s common for people to marry someone from a similar cultural background, many white people marry other white people, East Asians marry East Asians, and many African Americans marry African Americans however there are exceptions like interracial marriages which are very common these decades.

But what about smaller minority groups like North Africans, Native Americans and Polynesians? Do the people from these groups marry other minorities and white people because it is hard to find a partner from their own culture?

If I was living in the USA I would marry someone from my country Algeria or similar culture like Morocco or Egypt.