Andrew “Vu” Ritchie is departing his job as senior counselor at the federal Centers for Medicare and Medicaid Services (CMS) to take a position as counsel in Sen. Tom Cotton‘s office, Cotton’s spokesperson Caroline Tabler confirmed.

Prior to moving to D.C. to take the CMS position last summer, Ritchie, an Arkansas native, had worked for Gov. Asa Hutchinson, first as deputy legal counsel and then as a senior policy advisor, working on agriculture, energy, environment and transportation. He also served as the regulatory attorney.