As things stand now, a House and Senate conference committee is the only hope that Democrats and Republicans can reach agreement on border security and avoid another government shutdown. The negotiations — such as they are, for a committee that has met briefly, only once in more than a week — are ostensibly between Republicans and Democrats. But well-informed Republicans believe it is another set of talks — internal talks among Democrats — that will determine whether the committee succeeds and a shutdown is averted.

“This is not a negotiation between Republicans and Democrats,” said one GOP lawmaker who is keeping close tabs on the process. “This is a negotiation between rank-and-file Democrats and Nancy Pelosi.”