Since he is Hispanic, check out the scholarships linked to in this thread for possibilities:
Resources for Hispanic students - START HERE
NA is big question for Hispanics, many do have backgrounds that go back to Original Peoples of the Americas, but there are two problems: first that programs/scholarships created for NAs had North American tribes in mind; second, because (usually) Hispanics with NA ancestry don't have formal tribal affiliations like they do in the US & Canada.
However, it's always worth finding those scholarships and looking at websites or calling organizations to find out what their requirements are.