Hitting the tribe where it hurts $$$, or ANY tribe for that matter can and has worked before. Case in point, Northwood Casino in Lynden, WA was built against strong public opinion, opposition from the state liquor control board and the county, due to the county roads. The casino was built on alledged "Indian Trust land" on a small piece of tree'd swamp ground no where near any reservation. They were banking on on canadian's flocking to gamble their loonies and local business.
Well turns out, their plans were a little short sighted. The "If you build it, they will come" philosiphy didn't work so well. Build a casino out in the sticks, people won't come apparently.

Now the tribe is in default of their loan and being sued:

http://www.bellinghamherald.com/102/story/1120972.html