Other names swirling as possibilities include Mary Ann Glendon , a professor at Harvard Law School , and Larry D. Thompson , the former deputy attorney general who is now the general counsel of PepsiCo in Purchase , N.Y. Mr. Thompson , an African-American and a favorite of Mr. Bush , was mentioned last year as a possibility to succeed John Ashcroft as attorney general , but Republicans said at the time that he was not interested in the job .