US President Barack Obama has spoken in support of Clinton during the e-mail scandal and the FBI investigation. Moreover, Obama noted that the investigation should proceed anyway. " I think that there is a norm that when there are investigations, we don't operate on innuendo and we don't operate on incomplete information and we don't operate on leak," said Obama, reports the Reuters. He recalled that the previous investigation of the FBI has found out that Clinton had not used her personal e-mail deliberately. "Yes, she had made some mistakes but there wasn't anything there that was prosecutable, " Obama said.