The reason Open Border advocates (like Colorado Immigrant Rights Coalition- CIRC) wanted this gone is this. The people being smuggled, even if they are paying thousands of US dollars to the cartels, can qualify and are directed to apply for a U-Visa to live and work here.

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uscis
Victims of Criminal Activity: U Nonimmigrant Status 

Qualifying Criminal Activities
Human Trafficking (smuggling)


https://www.uscis.gov/humanitarian/victims-human-trafficking-other-crimes/victims-criminal-activity-u-nonimmigrant-status/victims-criminal-activity-u-nonimmigrant-status#Qualifying%20Criminal%20Activities