from the report:
Based on the facts and the applicable legal standards, however, we are unable to reach that judgment [that Trump did not act with corrupt intent and did not commit felonies]. The evidence we obtained about the President’s actions and intent presents difficult issues that prevent us from conclusively determining that no criminal conduct occurred. Accordingly, while this report does not conclude that the President committed a crime, it also does not exonerate him. 
And, if you are still on the fence about the importance of moving forward on impeachment hearings, take three minutes to watch this excellent short video on the five major benefits of beginning an impeachment of President Obstruction.
 Mueller also wrote, with no ambiguity whatsoever:
The conclusion that Congress may apply the obstruction laws to the President’s corrupt exercise of the powers of the office accords with our constitutional system of checks and balances and the principle that no person is above the law.