At the Enlightened Despot blog, Akhbar the Great cautions people against ignoring the full import of the Employee Free Choice Act, while getting caught up in rhetorical abbreviations.  AtG would not refer to EFCA simply as "card check":

And this isn’t just a technicality. Other countries have a card check policy, but they of course don’t have EFCA on the books – it’s a proposed American law. Meanwhile, EFCA contains a lot of significant measures unrelated to card check. Indeed, card check itself is becoming increasingly irrelevant – there is simply no reason to think Democrats can put together 60 Senate votes for any bill that includes it, at least not until after the 2010 midterms.

At this point, the policy to watch is mandatory binding arbitration. Mandatory binding arbitration would require management and a newly formed union to enter a binding arbitration process for a two-year contract if the two sides are unable to come to terms on their own. The major compromise bills that have been introduced contain neither mandatory arbitration nor card check, and are about as popular with labor as Japanese car companies. Meanwhile, anti-labor types are worried that Democrats are planning to drop card check as a compromise for enacting mandatory binding arbitration.

The Truth About the EFCA blog carries a Columbus Dispatch story which it asserts highlights the dangers of card-check organizing:

An Ohio union organizer has been fired after he was caught forging documents to deduct money from public employees’ wages to pay for political activity, the Service Employees International Union said yesterday.

Becky Williams, president of the SEIU District 1199, said she thinks this is an isolated incident, but the union is continuing to investigate.