The "Defending American Jobs and Investment Act" aims to combat unfair tax practices imposed by foreign countries that negatively affect U.S. businesses and citizens. The legislation specifically targets extraterritorial and discriminatory taxes, which are seen as barriers to fair competition for American companies operating internationally. Key provisions of the law require the Secretary of the Treasury to report to Congress on foreign countries that impose these unfair taxes. The initial report must be submitted within 90 days of the law's enactment, with subsequent reports every 180 days.