At the very least, True Dem could've met with his counterpart in Germany to discuss such a big issue to Germany. To my knowledge, no such meeting occurred.
I meet with Chancellor Merkel in Germany only a couple of days before Dubya made his proposal:
https://uselectionatlas.org/FORUM/index.php?topic=31696.msg738335#msg738335https://uselectionatlas.org/FORUM/index.php?topic=28225.msg756732#msg756732If Dubya would have given me any notice at all about his proposal (I didn't even know he was going to make it until he posted it), I would've surely talked to the German government first.