Your title is misleading. Where does it say the president signed CAFTA?
1) The title says "signs on to CAFTA" it does not say "signed".
2) "signs on to" means tacit or explicit approval not a signature.
3) If you think bush's trade entourage agreed to the documents in question without bush's sanction and approval you are to put it kindly, mistaken.
4) Stand on your own hind legs and debate the issue - don't run to the AM.
Sheesh.