Every such violation we learn about must be reported and prosecution demanded. Repeatedly, until they can no longer ignore us. Even if it's mom, dad, sister, brother, cousin, friend, co-worker, acquaintance...
We need the phone numbers like I now have the ICE 800 on my Android Phone:
If you would like to report illegal aliens, please call Immigration and Customs Enforcement (ICE) at 1-866-DHS-2ICE (347-2423).
They will need to know names, locations (either work place or residence) and any other specific information you can provide. For more information, please visit www.ice.gov.