Republican legislation, and others
I found this and this from the House in the 104th Congress. Here's one from the Senate. There's probably more, but this is getting to be work. Not sure if any of this comes under "refusing to recognize" the treaty, or just under making sure there are no loopholes. Don't know if any of this got out of the legislature--the trail seems to peter out at the Foreign Relations Committee.
Just as a historical note, this Senate resolution from the 103rd Congress, is interesting.