UNITED STATES—A planned $700 million tribal casino resort on the edge of Vallejo is facing new uncertainty. The Department of the Interior (DOI) told the Scotts Valley Band of Pomo Indians that its earlier green light for gaming “may have been based on a legal error.”

The agency has now moved the project into an accelerated review. This left the tribe, the city, and casino opponents waiting on a new federal decision.

DOI Flags Legal Concerns As It Revisits The Project

In a December 3 letter, DOI officials informed Tribal Chairman Shawn Davis that the original approval for gaming eligibility at the Vallejo site might not have followed the law correctly. This prompted the staff to work “as quickly as possible” to finish a new review.

The move comes after years of back-and-forth over whether the 160-acre site near Interstate 80 and Highway 37 can host a full-scale casino under the Indian Gaming Regulatory Act (IGRA). The project includes a 24/7 casino, tribal offices, 24 single-family homes, structured parking, and a 45-acre biological preserve.

While California still argues where tribe casinos can go project by project, most of the battles in other states are now happening online. In states like New Jersey and Michigan, the law spells out which companies can legally offer online slots and tables. The most important part of this is what control the state game boards have over them.

The same goes for the online casino landscape in Indiana where regulatory restrictions have created a unique market dynamic. Since the Hoosier State doesn’t permit domestic real-money online casinos, players access offshore platforms offering slots, table games, video poker, and live dealer options unavailable through regulated channels. These offshore sites compete through promotions, ranging from no-deposit free play offers to ongoing cashback deals that land-based casinos can’t match.

Most notably, any future iGaming legislation will need to carefully spell out which brands can operate and under what circumstances. Tribes in California that are keeping an eye on Vallejo can see what happens when the hard questions about “where” and “who can operate” are answered right away in the law. This is better than having to go over everything again every time a new trust-land casino is suggested.

Years Of Lawsuits And Changing Federal Decisions

The Vallejo casino proposal has been in play for nearly a decade. Earlier applications by the Scotts Valley Band led to shifting decisions inside the federal government, including both approvals and reversals tied to how the tribe’s historical connection to the land is interpreted. 

In 2025, a federal judge in Washington, D.C. ruled that the DOI violated the tribe’s due-process rights when it pulled back gaming eligibility without proper notice. The court ordered the agency to fix that procedural mistake. It also left the door open for a full reassessment of the underlying decision. 

That ruling set the stage for the new December letter, which acknowledges the possibility of a legal error in the original approval. This alone puts the project back under the microscope.

Conclusion: What’s At Stake For Vallejo And California Tribal Gaming

People who support the Vallejo resort say it could bring jobs, money for building, and new money for Solano County. People who are against the project say that it will cause traffic problems near the interchange and could hurt current tribal casinos. 

California already has 66 casinos run by 63 tribes under a mix of state compacts and federal “Secretarial Procedures.” This makes tribal gaming an important part of the state’s economy and tourism. But projects like Vallejo, which involve new trust land and questions about ties to the past, are a more touchy area of federal law.

For now, the Vallejo resort remains in legal limbo. The Scotts Valley Band still holds land in trust, and recent court rulings protect its right to a fair process, but the DOI’s own warning about a possible legal error means the tribe cannot be sure its current gaming approval will survive.