DALLAS–(BUSINESS WIRE)–Empower, a vertically integrated producer of American-made lithium, today announced the expansion of its senior leadership team with Andrew Sinclair joining as chief public and government affairs officer. Sinclair will be based at Empower’s new Washington, D.C. office. The Dallas-based company will also have a presence in Austin under Sinclair’s leadership.Sinclair brings more than two decades of experience in public affairs to Empower as it scales commercial production