Here is some evidence of obstruction of justice.
"There is evidence that at least one purpose of the President's conduct toward Sessions was to have Sessions assume control over the Russia Investigation and supervise it in a way that would restrict its scope." Page 112, Volume II
"President Trump reacted negatively to the special counsel's appointment. He told advisors that it was the end of his presidency, sought to have Attorney General Jeff Sessions unrecuse from the Russia investigation and to have the Special Council removed, and engaged in efforts to curtail the Special Council's investigation and prevent the disclosure of evidence to it, including through public and private contacts with potential witnesses." Page 8, Volume II