This also granted them an opportunity to gain US citizenship by enlisting in the military .
In the civil arena , the Bracero Program gave the opportunity for many thousands of Mexicans to work in the USA in support of the war effort .
This also granted thousands an opportunity to gain USA citizenship by enlisting in the military .
In the civil arena , the Bracero Program gave the opportunity for many thousands of Mexicans to work in the USA in support of the war effort .