According to KELO, Senator John Thune voted for an amendment to the amnesty bill which would place a five-year limit on a temporary worker program.
In the complex world of political maneuvering, this amendment is described in an AP story as a "major stumbling block."
From the AP piece:
The reversal dismayed backers of the immigration bill, which is loathed by many conservatives. The measure could sink altogether if proponents fail Thursday to muster the 60 votes needed to scale a procedural hurdle; otherwise, Senate Majority Leader Harry Reid, D-Nev., has said he will shelve the bill and move on to other matters.
The bill would tighten borders, hike penalties for those who hire illegals and give many of the country's estimated 12 million illegal immigrants a pathway to legal status.
The first two provisions mentioned would be great...but not the third, to provide amnesty to those who broke our laws and invaded our country to get here.
There's a simpler solution actually: just allocate money to build a border fence, hire more border patrol...and just enforce the laws we already have.