From KTRK-13:

Conroe police had been getting complaints from business owners, saying day laborers were swarming their customers and blocking entrances. The city has a designated day labor lot, where laborers are allowed to find work. Anywhere else, they say, is against a city ordinance.

So the city went to where the business owners were complaining and started talking to people. Lo, and behold, some of them were breaking more laws that the one against solicitation.

At least 20 people were arrested Thursday. Most of them were undocumented workers and handed over to immigration officials.

Of course, had that occured in the not-a-sanctuary city of Houston, no one would have been handed over to immigration officials, since HPD cannot ask anyone if they’re in the country legally. As a result, they’d have been back on the street, probably in the same place, the next morning.