Assuming this is a sincere question, there is already a great deal of reporting about the harm of (as you put it) "enforcing immigration laws effectively", and it is staggering to believe you're unaware of it.
Just within the 5 days, over 600 immigrants were taken at their workplace by ICE in Mississippi, leaving many children stranded and uncared for [1].
Surveillance of the general populace shouldn't be necessary to enforce immigration laws. We didn't even have an immigration enforcement department until 2003.
Just within the 5 days, over 600 immigrants were taken at their workplace by ICE in Mississippi, leaving many children stranded and uncared for [1].
[1] https://www.theguardian.com/us-news/2019/aug/08/mississippi-...