Options for Estimating Illegal Entries at the U.S.-Mexico Border.

摘要

The U.S. Department of Homeland Security (DHS) is responsible for securing and managing the nations borders. Over the past decade, DHS has dramatically stepped up its enforcement efforts at the U.S.Mexico border, increasing the number of U.S. Border Patrol (USBP) agents, expanding the deployment of technological assets, and implementing a variety of consequence programs intended to deter illegal immigration. During this same period, there has also been a sharp decline in the number of unauthorized migrants apprehended at the border.