The Indians appear from 0:49 to 1:06 in the trailer.
The Native aspects
As usual with most modern movies, Taking Chances' portrayal of Indians is a mixed bag. I could write a whole essay on the subject, but here are the highlights:
If necessary, the Indians would find a site elsewhere and coexist with the battlefield. Because two tourist attractions are than one, obviously.
I guess the contrast is supposed to be funny, but it's mostly silly and pathetic. Mary is the only one negotiating like an actual Native businesswoman would.
A hint of the feds
That's weak, but this is perhaps the only casino-themed movie to recognize the role of federal officials. A tribe would have to take land into trust before it could open a casino, which would require the Bureau of Indian Affairs' approval.
The screenwriters executed this idea poorly, but at least they had the idea. That's something.
When you're talking about a business deal worth hundreds of millions of dollars, few if any idiots are involved. Any businessperson would do due diligence and prevent this kind of problem from arising. In short, there's no way it could happen--none.
Despite these criticisms, Taking Chances is a decent romantic comedy. It's the type you might watch if you came across it accidentally. Or if you wanted to see how movies portray Indians these days, like me. Rob's rating: 7.5 of 10.
For more on the subject, see The Best Indian Movies.