The investigation into Hillary is over. Did you read the FBI Memo to Trump? The memo recommended firing Comey because he could not accept the decision not to recommend prosecution of Hilary, and in violation of FBI rules,  tried to make a "closing argument"against her "without a trial" by releasing derogatory information on Hilary (her careless handling of classified information, etc.) after the investigation was concluded. The FBI said Comey's worst offense was the letter he wrote to Congress just before the election and after the report  of the decision not to prosecute. This broke the most fundamental rules and protocols of the FBI. Everything Trump does regarding the investigation makes him look like he is covering things up-- it would be better for him to encourage a broad and thorough investigation and give the investigators free reign.