This document discusses migration between Central America and the United States. It covers push and pull factors that influence migration decisions, including violence, economic opportunities, and family ties. The document also outlines Obama's proposed comprehensive immigration policy, which aims to secure borders, improve the immigration system, and provide a path to citizenship for undocumented immigrants. Finally, it presents photos from Alex Webb's collection "Crossings" that depict the difficult journey migrants face traveling through Mexico to reach the US border.