This sentence in the report, sounds almost like an invitation (and agreement) by Mueller, for Congress to punish and impeach the president ...
"The conclusion that Congress may apply the obstruction laws to the President's corrupt exercise of the powers of office accords with our constitutional system of checks and balances and the principle that no person is above the law."
I look forward to Mueller discussing this in more detail, when he is asked to speak before the Congressional Committees.
This reminded me of something, and I went back to check the text of the report. President is capitalized there in the report, as in your post, so it's being used as a proper noun to refer to a particular President, not just a president in a hypothetical case. I could see some people quibbling about that because it's an important distinction. It's saying that Trump did corruptly exercise his power.
(This was in the other Mueller Report thread, but I thought I would bring it here, as it relates to this new "impeachment" thread.)