Nail on the hammer right here, aside from Gardiner, no way he gets consideration as a rookie.
Have you seen the teams that USA sends to the WC normally? None of the good players play. Last year Mike Brown and Komisarek made the team as well as a bunch of AHLers, borderline NHLers, guys from Euro leagues and college kids. In 2010 Christian Hanson, Tim Kennedy and Ryan Carter made the team. I believe they've finished in the relegation rounds the last few years, so Gardiner should be a lock on defense should the Marlies get knocked out.
Anyways, the guys I think will be there:
Canada: Phaneuf, Lupul, maybe Macarthur and Bozak.
USA: Brown, Crabb, Steckel, and Komisarek should all make it if they have the usual turn out of guys. If they want to go Kessel, Connolly, Liles.
Sweden: Gustavsson, Gunnarsson
If the Marlies go down expect Holzer and Mueller to suit up for Germany, Mikus to attempt and make the Slovak squad and Gardiner to play for USA.