The legal answer doubtlessly is in the technicality that the Clinton Foundation isn’t Hillary and Bill. But the way it works to pay Hillary and Bill sure looks like a money laundry to Hillary and Bill.
All very well to draw a distinction - but suppose (counterfactually) that the Foundation were doing good. That good has the Clinton name on it. The Constitution says, “of any kind whatever” - and edifying your name is a “kind” of present. As Dale Carnegie put it,
Remember that a man’s name is the most important sound in this or any other language. So in principle it could be considered a “title,” even if it were not actually more of a gift.