I knew the USDA did this... there was a big thing about it earlier this year because whoever was running it admitted that she was giving preferential treatment to blacks who applied (she is black) and then had change of heart and saw the error of her ways. I can't remember her name. I guess I could google it...
But this is a classic example of what we're talking about. There's no mention of agriculture in the constitution, and even if there was, why are they giving home loans? What business does the federal government have giving home loans in the first place?