discussed Cited "see, e.g." Charles E. Wolfe v. United States See Harris v. United States, 764 F.2d 1126, 1128 (5th Cir.1985) (“[w]hether or not [the corporation] was a separate taxable entity is not the same question as whether it was an alter ego for the purpose of piercing the corporate veil”); see also United States v. Creel, 711 F.2d 575, 579 (5th Cir.1983), cert. denied, 464 U.S. 1044 , 104 S.Ct. 714 , 79 L.Ed.2d 177 (1984).