Testimony issued by the Government Accountability Office with an abstract that begins "The attempted bombing of an airline on December 25, 2009, by a Nigerian citizen with a valid U.S. visa renewed concerns about the security of the visa process. Further, unauthorized immigrants who entered the country legally on a temporary basis but then overstayed their authorized periods of admission--overstays--could pose homeland security risks. The Department of Homeland Security (DHS) has certain responsibilities for security in the visa process and for addressing overstays. DHS staff review visa applications at certain Department of State overseas posts under the Visa Security Program. DHS also manages the Visa Waiver Program through which eligible nationals from certain countries can travel to the United States without a visa. This testimony is based on GAO products issued in November 2009, August 2010, and from March to May 2011. As requested, this testimony addresses the following issues: (1) overstay enforcement efforts, (2) efforts to implement a biometric exit system and challenges with the reliability of overstay data, and (3) challenges in the Visa Security and Visa Waiver programs."

Testimony issued by the Government Accountability Office with an abstract that begins "This testimony examines issues related to food and agriculture emergencies. Agriculture is critical to public health and the nation's economy. It annually produces $300 billion worth of food and other farm products and is estimated to be responsible for 1 out of every 12 U.S. jobs. As a result, any natural or deliberate disruption of the agriculture or food production systems--including natural disasters, disease outbreaks, and food contamination--can present a serious threat to the national economy and human health and can halt or slow trade. The food and agriculture systems are also vulnerable to terrorist attacks, such as the intentional introduction of a foreign animal or plant disease or the intentional contamination of food products. Recognizing the vulnerability of the U.S. food and agriculture systems, the President issued Homeland Security Presidential Directive (HSPD) -9 in January 2004 to establish a national policy to defend these systems against terrorist attacks, major disasters, and other emergencies. HSPD-9 assigns various emergency response planning and recovery responsibilities to federal agencies, including the Departments of Agriculture (USDA), Health and Human Services (HHS), and Homeland Security (DHS), and also the Environmental Protection Agency (EPA). …