Winston & Strawn on Wednesday announced it has added Abbe David Lowell, who represents President Donald Trump’s senior adviser and son-in-law Jared Kushner in connection with the ongoing probes into Russian interference in the 2016 elections.

Lowell is joining Winston & Strawn as a partner based in Washington, D.C., and New York and departing Norton Rose Fulbright, where he was co-head of the firm’s U.S. regulations, investigations, securities, and compliance practice. Lowell previously served as Chadbourne & Parke’s litigation department chairman and white-collar group leader before the firm merged with Norton Rose Fulbright last summer.