Hospitals must provide emergency treatment to all who walk through the door, regardless of their citizenship status or ability to pay.

Global crude oil demand is increasing, particularly in places like China

California has the highest number of illegal immigrants residing in its borders. The estimated number of illegal alien residents in California was about 2.2 million, or nearly 32 percent of the total number of illegal immigrants in the United States

A variety of factors contribute to the price of gasoline in the United States. These factors include worldwide supply, demand and competition for crude oil, taxes, regional differences in access to gasoline supplies and environmental regulations

An estimated 7 million illegal immigrants were residing in the United States in January 2000. This is double the size of the illegal immigrant population in January 1990 and constitutes 2.5 percent of the total U.S. population of just over 281 million

Emergency health care for illegal aliens along the southwestern border is already costing area hospitals $200 million a year, with perhaps another $100 million in extended care costs

Energy companies, such as Chevron and Shell, and oil producing countries, such as Kuwait and Venezuela, pump crude oil from their vast land holdings and sell it on the world market