At the same time, the report suggests that the Treasury program, known as the Troubled Asset Relief Program, or TARP, may have played a constructive role.
"It appears that the existence of the TARP might have served to enhance the negotiating position of the U.S. government (at least in a limited way), as it demonstrated the willingness of U.S. officials to be aggressive and forceful in committing a significant amount of resources to confront a deepening crisis," the report says.
Treasury Department spokesman Mark Paustenbach said the report "shows that Treasury worked effectively with its overseas partners in a number of ways to address the global financial crisis."