Tác giả: Richard M. Taylor

Border enforcement is a core element of the Department of Homeland Security’s (DHS’s) effort to control illegal migration, with the U.S. Border Patrol (USBP) within the Bureau of Customs and Border P …

According to the National Research Council (NRC) and others, infrastructure such as roads and bridges, wastewater systems, and National Aeronautics and Space Administration (NASA) centers are vulnera …