because most people expect the Treaty if signed by H-Clinton, B-Obama, does not go into effect unless it's ratified, and that it will be defeated entirely in the US Senate !
But legally Obama is not under any obligation to submit the Treaty for ratification, he can hold onto it as long as he wants to !
And since Ratification is actually 2cndary to becoming a signatory to the Treaty.
Because by becoming a "Signatory" carries its own obligations,
Which requires the US to participate in the Treaty,
Under the "Vienna Convention on the Law of Treaties."
That is, we are legally obligated to do nothing to counter or otherwise interfere with this Treaty,
While ratification is being considered, regardless how unlikely the prospect of