The correct answer to this open question is the following.
The question is incomplete. It is missing the part of the context.
This should include the idea that you are supposed to write a journal to a friend that has never been in the United States. So wants to know more about the US and what to expect if he visits it. He is concern about diversity issues in the US.
So with this context, we can say that when in America, your foreign friend would see and experience the following issues in different manifestations: workplace, education institutions, armed forces, sports, religious organizations/institutions, families, politics/government, entertainment/media, the justice system, health care.
Every country has its own different issues and strengths. In the US, there are great college institutions where research and innovation are paramount. The armed forces are renowned for their discipline, determination, and discipline.
America is the place for sports and entertainment. Modern venues, nice facilities, and a competitive spirit in sports to be the best in national sports such as football, basketball, and baseball.
On the other hand, the US is living very difficult moments right now that is exposing the weakness in the health system. The economy is not doing well and people are losing their jobs. The Neoliberal economic model is ending and people are demanding a new economic model. Finally, the issue of racism has been part of this country since the very beginning. Today, recent incidents have increased this issue.
That is what your friend would be witnessing if he decides to come to live in the United States.