Sen. Pat Toomey, one of the authors of the amendement, told Agri-Pulse, "At this point, it's unlikely we will bring that to a vote."

Toomey and Sen. Dianne Feinsten had originally included an amendment in the bill that called for the elimination of corn-ethanol consumption under the Renewable Fuel Standard (RFS).

One reason the amendement fell through was because it would have divided senators along regional lines, according to Sen. Deb Fischer, Agri-Pulse said.

Indeed, several proponents of the Keystone XL pipeline are also notable supporters of the RFS and corn-ethanol.

However, that shouldn't have been the main the reason it failed as it was an amendment built on fictitious premises.