King & Spalding has brought on board Jamieson Greer, the former chief of staff to U.S. Trade Representative Robert Lighthizer, as a partner in its Washington, D.C., office.

Greer joined the Trump administration in May 2017, after less than a year as of counsel at Kirkland & Ellis. He spent four years as an associate at Skadden, Arps, Slate, Meagher & Flom, where Lighthizer served as a partner before resigning in January 2017. He left the government at the start of April, after being approached by King & Spalding about joining the firm.