The unusual move to kill a Reid­-backed proposal has raised suspicions among Senate negotiators about the White House’s motivations. They believe President Obama’s team is eyeing a broad corporate tax reform deal in 2015, when Republicans will control the Senate and the House.
“It might indicate less about the merits of the package and more about the White House using progressives to kill a deal now in order to pave the way for a deal with Republicans next Congress that progressives will absolutely loathe,” said a senior Senate Democratic aide.

The administration joined forces with the House Democrats with one thing in mind: making sure a possible veto wouldn’t be overturned.

“Clearly the White House calculated that the House Democrats could sustain a veto,” said another Democratic aide. “The White House had conversations with a slew of House Democrats on Tuesday. It was furiously trying to assess how much opposition there was in the House. They were very upset.”