"Unless wealthy colleges start spending more of their endowment assets on student aid, they can expect more scrutiny from the federal government," The Chronicle of Higher Education reports. "Dean A. Zerbe, who recently resigned as senior counsel to Sen. Charles E. Grassley, said in an online discussion with The Chronicle of Philanthropy that members of Congress remain interested in discussing a mandatory payout requirement for college endowments that have more than $500-million in assets. But whether lawmakers pursue legislation to enact such a change will 'depend to a certain extent on the voluntary response by the colleges.'"