Gotta love Chris Dodd on this one, hopefully someone will offer his him the vice presidency, but how did retroactive immunity creep into this bill in the first place, why are the Democrats in Congress still catering to the every whim of the Bush administration?  Where are the other Democrats on this, where are the rest of the people's elected representatives, to stand with Chris against these telecom giants who have been violating our privacy for years, suppressing free WiFi, and keeping the cost of cable and satellite TV so high that most Americans can't afford it, thereby preventing most of the US population from having access to information which is vital to maintenance of a healthy democracy.

KagroX has the explanation here:

So here's how a hold works: If you want to hold a bill, you tell your party leader that if anyone asks for unanimous consent to bring that bill to the floor, you intend to object and withhold your consent. That would force whoever wants to bring the bill up to use the actual rules -- typically making a "motion to proceed" -- which is a bit of a pain in the ass, and requires getting an actual vote on whether or not to start debate on this bill.

If you're really insistent , you'll show up and filibuster the motion to proceed [which Dodd has said he will do]. Then we're back in the familiar and annoying territory of needing 60 votes to do anything. And that's always dicey, especially in an atmosphere in which Senators will automatically get each others' backs even if they're doing something stupid, like filibustering a motion to proceed on a perfectly good and popular bill. You get another Senator's back on something stupid, because one day you'll need him to get yours on something equally stupid.

Technically, Dodd would not be filibustering the actual bill, but the motion to proceed which sends the bill to the floor for a vote. Like with any other filibuster, sixty votes is needed to invoke cloture on the motion to proceed.

And when the Senate passed the FISA Amendement in August the vote was 60-28.  With 12 abstaining.

So would take only ONE of the yea's from August to vote against cloture on the motion. More depending on whether any of those who abstained in August vote to break Dodd's filibuster.

Killing this bill completely is very  doable, if any of the following Democratic Senators who voted FOR the FISA Amendment in August have enough of their constituents descend on them in enough of a rage:

Bayh ( D-IN), Yea
Carper ( D-DE), Yea
Casey ( D-PA), Yea
Conrad ( D-ND), Yea
Feinstein ( D-CA), Yea
Inouye ( D-HI), Yea
Klobuchar ( D-MN), Yea
Landrieu ( D-LA), Yea
Lieberman (I D-CT), Yea
Lincoln ( D-AR), Yea
Mikulski ( D-MD), Yea
Nelson ( D-FL), Yea
Pryor ( D-AR), Yea
Salazar ( D-CO), Yea
Webb ( D-VA), Yea

And 3 who abstained:

I'm glad to see my man coming down on the side of the people, for he is the People's candidate.

Clinton/Obama, can you say winning ticket?

Clinton/Obama, can you say landslide victory?

Clinton/Obama, can you say a new day dawning in American?