Under The Same Moon (2008)

Rosario (Kate del Castillo) is an illegal immigrant who had to leave her son, Carlitos (Adrian Alonso), behind in Mexico to find work in the U.S. After working dutifully for several years and sending money back home for Carlitos, Rosario goes on a dangerous journey to be reunited with her son. Plus, unbeknownst to her, little Carlitos takes off to find his mother.