House Speaker Rep. John Boehner, R-Ohio, speaks to the media about the fiscal cliff at the U.S. Capitol in Washington, on Thursday, Dec. 20, 2012. (AP Photo/Jacquelyn Martin)
People visit the U.S. Capitol in Washington, on Wednesday, Dec. 19, 2012, as negotiations on the fiscal cliff. (AP Photo/Jacquelyn Martin)
President Barack Obama waves to the media as he walks from Marine One to the Oval Office of the White House, Thursday, Dec. 20, 2012, in Washington, as he returns from Walter Reed National Military Medial Center in Bethesda, Md., where he visited injured military members. (AP Photo/Carolyn Kaster)
Senate Majority Leader Sen. Harry Reid, D-Nev., speaks to the media about the fiscal cliff at the U.S. Capitol in Washington, on Thursday, Dec. 20, 2012. (AP Photo/Jacquelyn Martin)
House Majority Leader Rep. Eric Cantor, R-Va., speaks to the media about the fiscal cliff and "Plan B," at the U.S. Capitol in Washington, on Thursday, Dec. 20, 2012. (AP Photo/Jacquelyn Martin)
President Barack Obama walks from Marine One to the Oval Office of the White House, Thursday, Dec. 20, 2012, in Washington, as he returns from Walter Reed National Military Medial Center in Bethesda, Md., where he visited injured military members. (AP Photo/Carolyn Kaster)
WASHINGTON (AP) — Confronted with a revolt among the rank and file, House Republicans abruptly scrapped a vote Thursday night on legislation allowing tax rates to rise for households earning $1 million and up, complicating attempts to avoid a year-end “fiscal cliff” that threatens to …