On taxes just because he didn't pay "income taxes" in 1981 doesn't mean he hasn't paid any taxes that year or since. Have to put they all in context. Think about it he's in real estate...you have to pay plenty of taxes in real estate...he's been in other businesses and sold things so he's had to pay sakes taxes....he's bought plenty...more taxes....he's invested and bought/sold there too so capital gains taxes...list goes on.
Far as the PACs go it's all a smoke and mirrors system on both sides. There have been a few larger ones started by GOP establishment guys who claim it's for Trump but he's had to come out and say don't give because it's not for him they are capitalizing on his brand. And he'd be a fool not to accept money in the general now primary is over. Bernie...he can have friends or those ex staffers go start one and use it to buy ads or fund plenty of things not through the official FEC campaign so it's the same thing at end of the day.
And you said show you them, that was simply what I did. Wasn't trying to make a broader argument about taxes and funding just that he does use them.