TRANSPORTATION

The Securities and Exchange Commission unanimously agreed to further limit the types of risky investments in tax-exempt money market funds and encourage greater diversification. . . . Archer-Daniels-Midland said four of the five managers on its board of directors won’t run for reelection this fall, a move seen by investors as a step toward an independent board. . . . The Senate Banking Committee will hold a confirmation hearing Tuesday on the reappointment of Federal Reserve Board Chairman Alan Greenspan and the nominations of Alice Rivlin and Laurence Meyer to the Fed’s board. . . . Colin Service Systems has been hit by the Immigration and Naturalization Service with the largest proposed fine ever for allegedly hiring illegal foreign workers, $1.5 million.