Khanna vented semi-publicly to participants on Yale’s semiannual conference call with its CEO Caucus. He branded Sinema’s evasiveness as “insane” and an inordinate amount of power for “one senator,” two participants told Axios’ Jonathan Swan.

Khanna reiterated his opinion later during an interview with Axios, saying progressives “absolutely” need to worry about Sinema more than Manchin.

“Manchin has always been reasonable,” he said. “At the end of the day, he’ll do what’s needed for the party, he always has.”…

“What is really challenging for many of us is the mystery and the lack of transparency that prevents progress,” Escobar told Axios. “The biggest mystery for me is around Sen. Sinema. We pretty much learn things through little snippets in the media.”

Raskin said: “People are very understanding of Sen. Manchin’s situation, because Donald Trump won his state by more than 30 points, and people appreciate the fact that he is, you know, a Democrat in a tough environment.”