Senator Bob Corker was probed by the FBI for accusations that he "hedge fund betted" against housing & exploited his position on the Senate Banking Commitee (which oversees housing) May of 2016.

Source: http://www.zerohedge.com/news/2016-05-25/feds-probing-potential-insider-trading-senator-bob-corker Source: http://thehill.com/business-a-lobbying/business-a-lobbying/273768-group-urges-scrutiny-of-sen-bob-corker-for-hedge-fund

This source proposes to outline the exact form of fraud Corker committed but lacks satisfying sourcing for the author's claims:

This scandal is relevant to PizzaGate because Donald Trump & Ivanka Trump are currently vetting the current avenues the White House has at their disposal to combat human trafficking & human slavery.

Source: https://twitter.com/IvankaTrump/status/836284598640312320

Source: https://twitter.com/SenBobCorker/status/837434925980725248

Last year was an election year with weekly scandals & hysteria. Bob Corker's scandal would have gained much more attention & public outcry had there been no election in 2016.