Panchito's Life and the Historic Braceros By ryndig Sep 1, 1939 Beginning of WWII 1942 Beginning of the Braceros Program 1943 Braceros program became the largest foreign worker policy in United States History 1944 Physical exams needed to accept bracero workers. Sep 2, 1945 End of WWII 1948 20,000 Bracero workers in the U.S. 1959 Cesar Chavez begins advocacy for Bracero workers to have fair working conditions. 1964 Bracero Program Ends