Shake Shack and Harvard University have been under fire this week for taking millions of dollars of stimulus money that was meant to help small businesses cope with the coronavirus pandemic. With Congress set to replenish the Small Business Administration’s Paycheck Protection Program this week, the White House is planning to update its guidance to ensure that rich organizations do not take money that they do not need.

“Harvard’s going to pay back the money,” President Trump said at a news conference on Tuesday.

Harvard, which has a $40 billion endowment, received $8 million in loan money. Shake Shack said this week that it would return its $10 million loan after a public uproar.

Treasury Secretary Steven Mnuchin said it appeared that there was some ambiguity in the rules surrounding the loan program that made big companies think they were allowed to apply for the loans.

“The intent of this was for businesses that needed the money,” Mr. Mnuchin said. “The intent of this money was not for big public companies that have access to capital.”

Mr. Mnuchin said that the Treasury Department would release new guidance explaining the certification requirements for the loans and that companies that did not meet those requirements would have the opportunity to return the money. Those that fail to do so will face “severe consequences,” Mr. Mnuchin said without elaborating on what the penalties would entail.

General Motors shuts down Maven, its car-sharing service.

General Motors said on Tuesday that it was shutting down its four-year-old car-sharing service, Maven, the latest such venture to close its doors.

Maven, which allows customers to rent cars by the hour, has struggled to build a substantial following. It was forced to suspend services in March because of the coronavirus outbreak.