Whatever your opinion, there is no denying that Donald Trump’s presidential campaign has caught the attention of the world in the way that no prospective candidate has in a very long time, perhaps ever.
Outspoken opinions
Trump’s outspoken opinions on ethnic minorities and the correct way to deal with an assumed immigration problem have meant that he has caught the ear of the world, and he appears to be taking full advantage of that.This is not new for Trump however, as problems with minorities have been a mainstay of his career, and during his time as a business man, Native Americans arguably got it worse than anybody else did.
Native American Casinos
In 2000, Trump took over control of the Native American Indian owned Twenty-Nine Palms Casino, which in itself caused some upset as in 1993 Trump had attempted (and failed) to besmirch the reputation of the Mashantucket Pequot Tribal Nation, who (perhaps coincidentally) ran a casino that impeded Trump’s plans for one of his own. 
He ran Twenty-Nine Palms Casino for five years, with the consensus being that he ran the casino into the ground during that time.
History with Native American casinos
With his history of difficulties with Native American run casinos, and his actions towards the people in general (he has made it clear that if he becomes president he will reverse the Obama Administration’s decision to rename Mount McKinley in Alaska to its Native American Indian name of Denali) suggests that in Trump’s America, the gambling industry may become a less friendly place for Native Americans.