Heritage is really doing an excellent job of covering the proceedings, without a lot of hysteria. He speaks of potential dangers in the treaty, some of which I share:
Second, most major U.S. arms manufacturers have an international financing, insurance, and parts and components chain. The ATT could become a means for foreign countries to pressure U.S. firms to exit the market, reducing the ability of Americans to make effective use of their firearms rights.
[…]
Just because the ATT is not a “gun grab†treaty does not mean it raises no domestic concerns: “Gun grabs†are less plausible than “death by a thousand cuts.â€
Go read the whole thing. Extrano’s alley is pointing out that Graham and McCain are signaling weakness, and might need some encouragement. I suspect they just want to have specifics to base any opposition on, and we do not yet have a draft, but a friendly reminder to the Senators would probably help if you are one of their respective constituents.