I am aware of that, but if Clinton was elected in 2016, it is virtually impossible that the senate would still be in Republican hands. While the president has no formal role, a Republican in the WH has huge influence over the legislature, and if it is Ted Cruz, he can spearhead the argument and make the case. Its not like the Repubs currently in control are going to do anything on it.
Two-thirds (Supermajority) vote of members present—assuming that a quorum exists—in both the Senate and the House of Representatives of the United States Congress;
IT IS DEAD JIM. This was not done in the 90’s. It is no longer even feasible. Conservative intellectual failed again to cut this off at the pass and settled for DOMA