Also if you want to help ICE, consider what anon on /pol/ pointed out as a suggestion:
Look at photos of ICE/DHS/FBI on-scene closely.
Note their attire carefully: type of shoes/boots, pants, shirts, hats, belts sunglasses - colors used and style
Mimic that - don't pretend to be a federal agent, just look like one. Affect their demeanor and watch the reactions of illegals when you go to the market/gas station etc. In practice, they will notice you immediately, in stores they will move to another aisle or be very nervous in the checkout line. DON'T DO ANYTHING.
The point, lads, is to be visible, nothing more.You are a visible 'force multiplier' and you don't have to take any action or say anything. Just be visible. If illegals see more people dressed like feds, they think enforcement is near. It makes them nervous because they know they're breaking the law. The more they see of this, the more they sweat. Cushy life isn't so cushy. Enforcement is around and may come for them next.
Let's help them decide to self-deport.