Heritage Action, the lobbying wing of the powerful Heritage Foundation think tank, got a major shellacking in March during the fight over “Doc Fix” legislation, which overhauled how doctors who treat Medicare patients get reimbursed. Heritage Action key-voted against the bill, citing concerns that it would grow the national debt by half a trillion dollars over twenty years. Despite the group’s protestations, though, the Doc Fix passed the House with just 37 no votes (only 4 of whom were Democrats). In the Senate, just 8 members voted against it.

It was a tough loss for Heritage Action. And many more followed. Trade legislation drew significant opposition from the group in June, as members fought over whether Congress would give the president extra authority to negotiate trade deals, allocate funds to support Americans who lose jobs due to said deals. While issues like Trade Adjustment Assistance and Trade Promotion Authority may not roll off the tongue of your average Tea Partier (or, well, your average human being), Heritage Action’s key-voting against trade provisions helped energize grassroots conservative opposition. That, combined with Breitbart News and the Drudge Report’s liberal (and frantic) use of the “Obamatrade” moniker stoked opposition on the right.

And all those guys lost…

“When Heritage key-votes against a bill now, it is almost guaranteed to get less conservative, and guaranteed to pass both chambers and become law,” said one former Republican House leadership staffer. “They have reverse Midas touch.”