Some commenters feel a patent ethics breach by the prime minister is OK, because they support the guy who he was peddling influence to, the Aga Khan.  A guy who receives millions of Canadian tax dollars?

The rules protect all Canadians from this kind of bribery and influence peddling.  Trudeau knows the rules, he deliberately flouted them and then tried to hide his destination.  He did not check with the Ethics Commissioner beforehand, during, nor report his transgression afterward.  He said nothing till he was caught and the Ethics Commissioner has now opened an investigation into his conduct.  

Ambrose is an interim leader only and is precluded from running for PM.  She heads a minority party in government that has no capacity to give away taxpayers' money.  Trudeau however, can and does.  

The Ethics Commissioner has not opened an investigation into Ambrose's conduct; Trudeau is under investigation.  Clearly the Ethics Commissioner sees a difference.