President Trump's policy of separating illegal immigrant children from their parents hurt the cause of border security because it turned off voters. There are unintended consequences for anything that gives David Duke a boner.
If that were 100% true, you'd have a point.
Now, people are bringing in children who are not their own, in order to make it easier to get in, and receive sympathy from people who agree with what you are saying.
It's simply not the case.
Coyotes and cartels traffic in everything, from avocados to people.
Bringing in drugs lands them in jail.
Bringing in people, with payments of 4 figures and up, makes it less likely to land in jail, and the people they bring in, garner sympathy of 1/2 of the country, with sentiments similar to those you've expressed.
To the cartels and the coyotes, it's about the money.
This is no humanitarian rescue mission.
At minimum, there is a tribute being paid to these close to the border state cartels to keep these "migrants" from being harassed.