The correct answer to this open question is the following.
Although there are no options attached we can say the following.
How is the history of Mexicans in the US relevant to the contemporary debate about illegal immigration?
It is very relevant because Mexico and the United States are neighbors, with all the positives and negatives this carries on. The history of these two countries has been marked by ups and downs, wars, agreements, and differences.
Nowadays, the relationship between Joe Bidden's administration and Andrés Manuel López Obrador is really good. Mexico and the US have this trade agreement with Canada called USMCA, the United States, México. and Canada agreement. However, immigration is an important issue that has created differences in different periods.
Right now, immigration is at its minimum levels regarding Mexican immigrants, The big problem is not Mexican immigrants but Central American immigrants, basically from Honduras, Nicaragua, and El Salvador. This is a major issue and it has created a critical situation on the border with México.
This situation affects México and teh US, but México is giving full support to the US deploying thousands of members of its military National Gard at the southern border to Guatemala and Belize.