Send your congressmen some mail!
Assuming that was a joke, but for clarity US congressmen have no sway at the CITES conferences unless they're actually a US delegate to the convention.
"How it Works":
https://www.cites.org/eng/disc/parties/index.php
"When the government of a State or a regional economic integration organization decides that it will be bound by the provisions of CITES, it can 'join' the Convention by making a formal declaration to this effect in writing to the Depositary Government, which is the Government of Switzerland. Once a document containing this declaration has been received by the Depositary, through the diplomatic channel, the Convention enters into force for the State concerned 90 days later (see Article XXII).
A State or regional economic integration organization for which the Convention has entered into force is called a Party to CITES. Currently there are 183 Parties.
A
State or regional economic integration organization that is a Party to CITES may withdraw from the Convention at any time by a process of denunciation (see Article XXIV). This has happened only once in the history of the Convention with the United Arab Emirates acceding to the Convention on 21 November 1974 but withdrawing from it on 27 January 1988. However the United Arab Emirates became a Party to the Convention again on 9 May 1990."
SO it's only a "treaty" in the loose sense of member states agreeing to conduct trade in listed species according to the framework of the
Convention; thus the reciprocal enforcement clause, but there is no actual treaty as such, with signed contractual obligations.
Also suspect the exemption proposal for rosewoods is pretty much a done deal waiting only formal ratification, otherwise this much time wouldn't already have been spent on it, it likely never would have even made the agenda for this meeting.
The conferences only occur every 2-3 years and they've got much much bigger fish to fry, so to speak.