Wrong, the US restricst exportation and importation of strong cryptography to and from anywhere in the world, except Canada. But the US recently released the law a bit (not enough). The law will remain until they understand that while cryptography is more than sufficient for us (credit card processing, read e-mails, or just chatting) it's not safe enough for terroristes. They just don't use digital encryption, they use other means of transmitting their messages.
At my knowledge very few (or none) existing server implementations support SSL, so there is little need on this part. However I aggree that having SSL tunnel for DCC would be nice. It would make me more confident when I send certain information. But then, I need to have proof of who I am talking to (my credit card information goes to my wife, not a stranger pretending to be my wife)... this could be implemented with SSL if designed carefully.