All the different bill versions, originated with the "Vitter Amendment".
Vitter said he hoped his proposal would garner bipartisan support to put a "basic, fundamental limitation in the law." He hoped right: The Senate approved his measure by unanimous consent earlier this year. It is now in the hands of a conference committee under a tight deadline to hammer out a budget deal. The bigger disagreements are over new income and eligibility restrictions that would push as many as 3.8 million Americans from the program, which currently benefits 47 million.