Pesticide regulation has been difficult due to the power of companies that make money off pesticide use and fears of their prosecution or losing their support.[3] When pesticide regulations were passed back in the 1970s, the United States federal government set laws setting tolerance levels on pesticide known to cause cancer sprayed on foods, but the EPA still authorized chemical testing that was not complete. After the McFarland cancer reports came in Governor George Deukmjian vetoed a bill requiring warning signs for pesticides in yards and farms in support of pesticide sprayers.[7] In 1999, the town of Earlimart was hit with a pesticide drift from metam sodium drifting into fields. The sprayers were fined $150,000, but use of the dangerous chemical did not stop.[2] There has also historically been racial prejudice in assessing pesticide concerns in the San Joaquin Valley.