Yes, but he's not in the military. He's not subject to the UCMJ. He doesnt have to have "moral authority" to lead, as his personal life is between him and his wife. You dont know, could be him and his wife dont sleep together and have an understanding, many people do that, and yes, many in the military do that for benefits.
The ONLY thing I disagree with was that he did it in office - but then again, hell if I had the chance to eff my wife in the oval office I probably would.
His relationships are his business and his alone IMHO. What he does sexually and with who is none of our business and IN NO WAY has anything to do with his ability to lead or the decisions he made for the country.
Like I said, we have different standards. I believe the leader of an organization should abide by the rules set for his subordinates. You don't believe the CIC should have to follow the basic rules he enforces over his subordinates. I do. The fact he wasn't subject to the UCMJ misses the point. He can't expect his subordinates to respect him if he is violating rules the subordinates have to follow.
When a person becomes a public figure then whatever he or she does is open to public scrutiny, particularly if he is engaging in conduct that most Americans would find objectionable.
I don't believe in public vs. private ethics/integrity. You either have it or your don't. If you lie in private you will lie in public. If you're dishonest in your private life you will be dishonest in business (or government).