That's not Conservatism, that's apathy. On a global level, the % of illegal child labor occurring within the reach of US prosecutors is minuscule.

When you do see it in the US, it's tied to some other illegal activity.

I'm going to guess that none of these children have parents that are either legal or present, or possibly both. There was a similar story about migrant children working in auto component factories in the South that made parts for Hyundai/Kia.

...and the higher-ups do usually escape in these things. See: https://en.wikipedia.org/wiki/Postville_raid