If the biggest scandal in the history of an agency that has been in charge of investigating counterfeiting for 147 years and responsible for protecting the president for 110 years is that a few agents hired some hookers in another country, I'd say that's a pretty stellar record on balance. Especially considering that they failed miserably in the latter duty at least* once.
Articulating beliefs that might get you declared criminally insane in Norway can help get you elected in (parts of) the United States.
One of the common objections to public transit projects is that they do not pay for themselves, and indeed, tend to lose money. Why is that not an argument against building more roads? Roads don't make any money, either, and nobody expects them to.
You can institute all of the Buffet rules and millionaire taxes you want. As long as the government is using the tax code to get you to have children/buy a house/use alternative energy/populate Alaska/go to college/insulate your home/generally do what they want you to do, those with means are always going to find a way to minimize their tax liability.
*Some people still have doubts about Harding. Look it up.