"Killibuster": Democratic angst grows as filibuster threatens agenda

“I believe this is just a pattern. ... They are just going to continue to use the filibuster to block fundamental changes,” said Sen. Ed Markey (D-Mass.). “I think the filibuster has to go.”

Hickenlooper added that it was “very frustrating” and predicted that Democrats would have ramped-up internal discussions heading into July.

“The process that we’ll go through over the next week or two probably doesn’t need me to lay it out or predetermine it,” he said. “But I do think that the very process of discussion … I do think it is going to point to a shift.”

Nixing or at least altering the filibuster has growing support from within the Senate Democratic Conference, and Tuesday’s setback is likely to push a few fence-sitters into the camp of changing the rules.