President-elect Donald Trump on Sunday chose Reinhold “Reince” Priebus, a Wisconsin lawyer who chairs the Republican National Committee, to serve as his chief of staff.

Priebus has been on leave from Milwaukee-based Am Law 200 firm Michael Best & Friedrich, where he is still listed as a partner, since he assumed the RNC chairmanship in 2011. A University of Miami School of Law graduate, Priebus was previously general counsel for the RNC and chairman of the Wisconsin Republican Party, where he had close ties to former Republican presidential candidate and current Wisconsin Gov. Scott Walker.