This issue is in the courts now and I believe, by DNA, will prove the mustangs belong where they are.  These horses sustain on very little food, so what is eating up everything on the range?  A reversal of that long-held belief that the mustangs do not belong could have the effect of moving the native horses to the front of the line when divvying up precious water and forage in the arid West - bad for Big Cattle!