Glendale City Council approved a resolution Tuesday to officially support the Tohono O'odham Nation's West Valley Resort and Casino.
The council's approval rescinds its earlier opposition.
Glendale is the fourth West Valley community to pass a formal resolution in favor of the Nation's project. Peoria, Tolleson and Surprise previously passed unanimous resolutions of support.
Informational talks began last October. The Nation has been seeking negotiations with Glendale since the project was announced in January 2009.
Opponents have argued a 2002 voter-backed pact barred more casinos from opening in metro Phoenix.
The Tohono O'odham Nation is a federally-recognized Indian tribe, with existing reservation lands in Maricopa, Pinal and Pima counties.
The West Valley Resort will be located at 95th and Northern avenues and is expected to generate more than 3,000 new, permanent jobs and more than $300 million in annual economic impact.
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