> In the immigration story, MacDougall shows that the consulting firm encouraged ICE to give less food and medical care to detainees.

I guess this is one big reason companies hire consulting firms - a consultant can act as a mouthpiece to say things you want people to hear, but not say yourself. A kind of moral laundry, absolving insiders from blame. Similarly they could recommend a risky business plan that someone believes in but doesn't want to stick their neck out for - if it fails, blame the consultants and move on.