Smoke and mirrors. There is already a branch of government that fills that roll. Since 1921, the (General Accountability Office) has been serving the public. In that role. The politicians of both parties hold them on a leash and don’t have them audit all Federal programs as they should. “The work of the GAO is done at the request of congressional committees or subcommittees or is mandated by public laws or committee reports.”

https://en.wikipedia.org/wiki/Government_Accountability_Office

https://www.gao.gov/