FBI investigation on Capitol Hill raises the question: Where were the regulators? 'Theyâre the ones taxpayers are paying to do this' An FBI investigation on Tennessee's Capitol Hill has put the spotlight on dark money secretly poured into elections from anonymous sources. and last updated 2021-03-08 14:21:24-05 NASHVILLE, Tenn. (WTVF) â An FBI investigation on Tennessee's Capitol Hill has put the spotlight on dark money secretly poured into elections from anonymous sources. Now, an exclusive NewsChannel 5 investigation has uncovered new evidence that state regulators ignored warning signs about the problem. âTo me, it comes down to making sure that elections arenât simply being bought,â said Nashville political activist Greg Hazlewood.