The Executive Office for Immigratoin Review (EOIR) has publised a useful guide to alternatives for individuals seeking to remain in the United States because they fear persecution at home. You can read the guide at

http://www.usdoj.gov/eoir/press/09/AsylumWithholdingCATProtections.pdf

The EOIR is the division of the Department of Homeland Security that includes the immigration courts and the Board of Immigration Appeals.