business with a contractor in the Excluded Party List System (or successor system) as maintained by the General Services Administration, the Secretary shall submit to Congress notice of such waiver and an explanation for a finding by the Secretary that a compelling reason exists for issuing such waiver. 127. Inspector general oversight of suspension and debarment The Inspector General of the Department of Homeland Security shall— (1) conduct audits as determined necessary by the Inspector General regarding grant and procurement awards to identify instances in which a contract or grant was improperly awarded to a suspended or debarred entity and whether corrective actions were taken to prevent recurrence