Final answer:
Many people from Mexico cross the border to the USA in search of jobs despite Mexico's growing economy due to the pull factors of the US-Mexican border region and the availability of low-paid labor opportunities. Additionally, one-way migration has become more common as a result of the unintentional outcomes of the Immigration Reform and Control Act of 1986.
Step-by-step explanation:
The high number of people from Mexico crossing the border to the USA in search of jobs despite the growth in Mexico's economy can be attributed to several factors. Firstly, the US-Mexican border region has become a strong pull factor due to the greater opportunities and advantages it offers. Additionally, many immigrants find low-paid labor opportunities in sectors like crop harvesting, cleaning, and childcare which are essential to the US economy. Finally, the Immigration Reform and Control Act of 1986 unintentionally led to a rise in illegal immigration as it strengthened the border, making one-way migration more common.