No, the DOJ told VA they could have it because that is who AA wanted the gates to go to if AA couldn't have them for themselves.
And yes, the city owns the property, last time I checked, that meant something in Texas, and the US of A. The DOJ can suck it.
Yes but per AA's lease agreement on two gates with the city of Dallas, AA can sublease them to another carrier without unduly denial. I just don't see what leg the Dallas city officials are standing on to deny AA's contractual right to sublease the two gates out.