Seems food stamps is the hold up.
Check it out:

Supporters of the $1 trillion farm bill say they are redoubling their efforts to get a bill over the finish line after the Thanksgiving holiday.

The top leaders of the House-Senate farm bill have come close to a framework during several tense negotiating sessions in the past two weeks, raising hopes on K Street that legislation could squeak through Congress by the end of the year. The four negotiators spoke via conference call Tuesday and reported no new developments.