Climate advocates plan $11 million ad campaign targeting ‘key senators’

Senate Majority Leader Harry ReidHarry ReidShutdown risk grows over Flint Overnight Finance: Four days left to avert shutdown | Conservative group bucks spending bill | Lawmakers play catch-up on smartphone banking Reid blasts GOP senator over Flint 'hostage' comments MORE (D-Nev.) plans to bring a bill to the floor this summer, and is gathering the Senate Democratic caucus Thursday for a meeting to discuss the legislation.

Climate advocates are struggling to keep greenhouse gas limits in the mix as the bill takes shape.