Under scrutiny from a U.S. House committee and with its president set to testify on Capitol Hill next week, Toyota has turned to a King & Spalding lawyer with a long history of representing corporations under congressional investigation.

Theodore Hester, a partner in the firm’s Washington, D.C., office, is representing the troubled Japanese automaker, congressional aides said. Hester is part of King & Spalding’s government advocacy and public policy practice group. Over the years he has registered to lobby for defense contractor Lockheed Martin Corp., pharmaceutical companies and others.