The dark money group No Labels is reportedly loading up on billionaire donors to support conservative Democrats in elections ahead.
The pop-up group has not disclosed its funders or the individuals behind it.
House Democrats' reform bill would let anyone follow the money behind election ads.
A conservative think tank funded in part by the fossil fuel industry put out a cost estimate seemingly intended to cause sticker shock atop search results.
The American Petroleum Institute spent hundreds of thousands of dollars to fend off a progressive challenger.