WASHINGTON (AP) — When it comes to resolving their “fiscal cliff” impasse, the dollar gap between President Barack Obama and House Speaker John Boehner is tiny in federal terms. That masks a monumental political ravine the two men must try to bridge, with most of the burden on the now-beleaguered Boehner.

Short of support from his own Republican Party, a chagrined speaker abruptly canceled a House vote Thursday night on his so-called Plan B. The measure would have prevented looming tax increases on everyone but people earning over $1 million annually, but was opposed by rank-and-file Republican lawmakers unwilling to vote for any tax increases at all.