See for instance the opinions clause and the appointments clause in the Constitution's second article.

Created by Douglas Lucas in mid-May 2025 as a footnote for his June 4, 2025 article at Rolling Stone titled Republican bill would legalize DOGE and let Trump dismantle everything: The Reorganizing Government Act is a longshot in the Senate, but that could change--and so would the separation of powers. MSN and Yahoo republished the article without paywalls. See also the accompanying blog post with extra material.