Harvard president compares fundraising changes to abolition of slavery

* Larry Bacow apologises for remark about 13th amendment* Colleges should not try to ‘own’ wealthy alumniThe Widener Library in Harvard Yard at Harvard University in Cambridge, Massachusetts. Photograph: Charles Krupa/APThe president of Harvard University has apologized for likening the 13th amendment to the US constitution – which abolished slavery – to changes in how colleges raise funds.On Tuesday, the Boston Globe reported, Larry Bacow suggested that as the 13th amend