Direct US participation of any sort should be off the table. It might be interesting to see how competent the Syrians are to use their chemical weapons. Why all the high moral tone about chemical weapons anyway? Gassing is more inhumane than high explosives? Chemical weapons can be persistent nuisances but that is the problem of those on the ground not us.
In alliances, it is not necessary for all to have the same capabilities.
Turkey and the GCC are American allies and do not posses the chemical weapons expertise of America. If the weapons are captured, it will be prudent for our experts to take control of them and assure safe disposition.