Donald Trump says Barack Obama 'did nothing' about Russia prior to Election Day | PolitiFact

"Now, the thing I have to mention is that Barack Obama, when he was president, found out about this, in terms of if it were Russia, found out about it in August," Trump said during a July 6 press conference in Poland. "Now, the election was in November. That's a lot of time. He did nothing about it."

People can argue that the Obama administration didn’t do enough to immediately crack down on Russia for meddling in the election. But Trump’s statement that Obama "did nothing" in the months leading up to Nov. 8 goes too far....
http://www.politifact.com/truth-o-meter/statements/2017/jul/10/donald-trump/donald-trump-says-barack-obama-did-nothing-about-r/