24 CFR §28.20

1. (a)If the General Counsel or designee determines that the Report of Investigation supports an action under this part, he or she must submit a written request to the Department of Justice for approval to issue a complaint under § 28.25.
2. (b)The request shall include a description of the claims or statements at issue; the evidence supporting the allegations; an estimate of the amount of money or the value of property, services, or other benefits requested or demanded in violation of § 28.10; any exculpatory or mitigating circumstances that may relate to the claims or statements; and a statement that there is a reasonable prospect of collecting an appropriate amount of penalties and assessments.