The case he makes is simple but compelling -- there is nothing in the Constitution that prevents indictment of a sitting President like Donald Trump. The actual trial, he argues, would then be postponed until after the President leaves office.
The rationale he offers is equally concise and convincing: statutes of limitation may expire if allowing a President to remain unindicted the entire time he or she is in office. "The White House should not be a sanctuary from justice," he concludes in the final sentence.
Read the linked column. It's not long but nonetheless is quite compelling.