After acquiring CSP, the Lyttons announced plans to expand it from into a , six- to eight-story casino, with up to 5,000 slot machines, which would make it bigger than the MGM Grand casino in Las Vegas, Nevada. U.S. Senator Dianne Feinstein (D-CA) expressed opposition in 2003, citing concerns that "off-reservation gambling" would be a strain on local resources, aggravate traffic congestion and increase crime. But on August 19, 2004, Governor Arnold Schwarzenegger announced an agreement to create such a casino, an agreement that required approval by the State Legislature and the U.S. Department of the Interior.