United States ex rel. Tenn. Valley Auth. v. Bailey , 115 F.2d 433, 434 (5th Cir. 1940); see also Duk Hea Oh v. Nat’l Capital Revitalization Corp. , 7 A.3d 997, 1010-11 (D.C. 2010) (barring evidence of other government acquisitions that would “bias the [government] by requiring it to explain its compromise decision and ‘what’s going on with the government’ and would occasion a ‘frolic and detour’ that would ‘bias’ the [government]”).