Billionaire Koch brothers network lays siege to Florida on policy initiatives as midterms loom

Billionaire industrialists Charles Koch and David Koch have been financing a political network that is swamping the battleground state of Florida. And while the group says it is nonpartisan, its efforts reveal potential policy hurdles for Democratic lawmakers, including those running for re-election in Florida in the 2018 congressional midterm elections.

Brian Schwartz | CNBC