The Semiannual Report to Congress summarizes the results of OIG oversight, provides statistical information, and lists all reports issued April 1–September 30, 2018. During this reporting period, OIG audits, investigations, inspections, evaluations, and other reviews identified over $1.15 billion in monetary benefits for a return of $17 for every dollar invested in OIG oversight. During this reporting period, OIG issued 158 reports and work products on VA programs and operations, made 594 recommendations, and conducted investigations that led to 214 arrests.