The Great Obama College Loan Mystery?

Michelle Obama in the DNC stated they recently paid off their student loans. How is it no interest was written off in the last 8 years of tax returns. Harvard will not release any records but NEWSMAX.com is reporting that at least 1/2 of his college funding was paid for by a muslim extremist..... the same extremist that Guliana refused to accept 10,000,000 after 911. Can anyone help me out on the truth of this story?