Death by a thousand cuts. Because we are talking infrastructure, most of the corruption is happening at the city and county level where the permitting process happens. Nothing really ever so big enough as to garner national news (and maybe this is why it has gone unchecked for so long); lots and lots of misuse of local taxpayer monies, misappropriations, etc.

I was reading recently about corruption in Jared Kushner's businesses; these detail some of the ways and means it happens: City approves large fancy tower complex, but construction company hires expensive out-of-state workers, fails to pay taxes that benefit local schools, etc.

- http://www.baltimoresun.com/news/maryland/baltimore-city/bs-... - http://www.dailykos.com/story/2017/5/29/1665349/-Meet-Jared-...