Your whataboutism is defence enough - his praise for the Charlottesville marchers would have had you screaming yourself hoarse if anybody else had done it
American politicians are known fro their sexual peccadilloes - the Kennedys, Johnson... all at it like rabbits
Most have had the good sense to do it in private - Trump and his 'golden showers' has made them a spectator sport   
"1) while SOME of his supporters are anti Semitic, so are some of the elected Democrats."
More whataboutism - it appears the Jewish People are no longer an issue with you
The word is Semitic by the way - shows just how important the subject is