The Heritage link is in reference to the Office of Inspector General. The Office of Inspector General is independent of the Agency it oversees with a budget that Congress appropriates separately and it’s leadership is independent. Inspector Generals are political appointments and most are senate confirmed positions. Unlike most political appointments, the Inspector Generals stay on throughout Administrations and are only asked to leave if there are performance issues. The mission of the Office of Inspector General is to root out fraud, waste, and abuse. Office of Inspector Generals or OIGs perform financial audits, performance audits (program evaluations), inspections, and criminal investigations. Generally most reports are publicly available and posted on each OIGs website. OIGs are referenced in the media as the “internal watchdog.” Congress can request (and frequently does) OIGs to perform audits, evaluations, or inspections for oversight purposes. Each OIG has an anonymous hotline where employees, contractors, or the general public can report fraud, waste, and abuse. There are 73 OIGs in the Federal government with CIA being the first established by Congress. https://www.ignet.gov/