The president, any president isn't above the law which includes the present one. If a president commits a crime, he can be tried for that crime once he leaves office or right after he is impeached found guilty and removed from office.
"The closest the Constitution comes to addressing the issue is in this passage, from Article I, Section 3: “Judgment in cases of impeachment shall not extend further than to removal from office, and disqualification to hold and enjoy any office of honor, trust or profit under the United States: but the party convicted shall nevertheless be liable and subject to indictment, trial, judgment and punishment, according to law.”
This much seems clear: The president and other federal officials may be prosecuted after they leave office, and there is no double jeopardy protection from prosecution if they are removed following impeachment."
https://www.nytimes.com/2017/05/29/...nal-puzzle-can-the-president-be-indicted.html