list at least three important details about Mexican immigrants’ journey to the united states.(help me answer this, thx)

Mexican immigration occupies a complex position in the U.S. legal system and in U.S. public opinion. Immigration law has swung back and forth throughout the 20th century, at times welcoming Mexican immigrants and at other times slamming the door shut on them. The public reception of this immigrant group has also been unpredictable; Mexican immigrants have been able to make a place for themselves in communities across the United States, but frequently have had to battle hostile elements in those same communities to survive.

Explanation:

where is the picture?