Article II, Section 3 - the president must take care to execute the laws faithfully. No president meeting the requirements of the office could issue an illegal official order. If the president orders something illegal, it’s necessarily against the oath of office and should not be considered official.
My feeling is that this ruling means any cases brought against the president would need to establish that an act was unofficial before criminal proceedings could proceed. Thay seems fine to me to adjudicate in each case.
You go stay in the arson/bullet target area before throwing this shit around, armchair politician.