This week, the U.S. Supreme Court reached a decision in the much-anticipated case about corporate spending on political campaigns.  The facts centered on the infamous "Hillary: The Movie," but the case raised significant issues about campaign financing generally and the McCain-Feingold campaign finance law.

By 5-4 vote, the landmark decision overturned federal laws that limited corporations' ability to fund political campaign ads.  The Court's decision also will allow labor unions to spend more on political campaigns.  The Court upheld a ban prohibiting corporations and unions from directly contributing funds to candidates for any use.

The Supreme Court's decision rolled back decades of campaign finance law to allow corporations and labor unions to spend unlimited dollars on political campaigns in support or opposition of candidates.  In the case, the Court treated dollars as speech (political expression), a First Amendment issue.

So what will this mean for tribes?  Tribes, as sovereign nations, were in the first place exempt from the federal  requirements.  So the most marked effect is indirect -- now corporations like MGM Mirage, L.A. Sands, etc., will be able to spend massive dollars on state-level political campaigns to influence gambling policy.

Read more about the case on MSNBC