Car manufacturers are not really accurate metaphors as it is CBP and ICE themselves who are carrying out actions that many people strongly disagree with. Whereas a car company has no control over its customers

If Ford were separating children from their parents and imprisoning them in warehouses then I'm sure many people would stop buying Fords or doing business with them.

There have actually been campaigns against vehicle manufacturers because of who they sell to. I recall that JCB and Land Rover have had campaigns against them as they sell vehicles (mainly armoured) to the armies of countries with questionable human rights records.

IBM got a lot of deserved grief for working with Germany in the 1940s. Arms manufacturers are rightly shamed for some of their customers.

I'm somewhat certain your beef is with the idea of that specific organisation being considered bad, not with the reaction to that determination.