Edward Liddy (L), chief executive officer of American International Insurance group (AIG), testifies before the House Financial Services Committee as they hold a hearing on "American International Group's Impact on the Global Economy: Before, During, and After Federal Intervention", on Capitol Hill in Washington,the United States, March 18, 2009. The head of financially troubled insurance giant American International Group (AIG) on March 18 called on top-earning employees to voluntarily return at least half of the bonuses. [Xinhua]