Expense reports provided to the state show millions were spent by the oil industry on California lawmakers recently, and that included a pricey pre-vote dinner in Sacramento.
Expense sheets recently filed with the California Secretary of State's office show Chevron and Western States Petroleum poured millions of dollars into lobbying efforts as fracking legislation was being considered.
Western States spent nearly $13,000 on dinner for 12 state legislators at one the more expensive restaurants in Sacramento, the Kitchen.
Shortly afterwards a fracking bill not supported by environmentalists was passed.
On the guest list were assemblymembers Adam Gray, Henry Perea and Cheryl Brown.
Also at the dinner were senators Norma Torres, Lou Correa, and Ron Calderon.
Calderon is also being investigated as part of an FBI bribery probe, though no charges have been filed, and there is no indication the dinner violated any laws.