I want to point out about what Pedro calls "limbo" - Its actually "dead".
If the committees don't get to a "Yes...we'll send this to the house for a vote"... the chance of this bill being reconsidered in the committee itself is negligible. They have a truck load of bills to look at... and most of them usually end up dead...and that too if at all they are ever considered in a markup.
So yes... its more important to call those democrats and republicans of the House Judiciary committee now than when it'll be in the house. At that time, we'll just have to call as many as we can, esp. those who oppose it or don't have a stated "for" position on it.