Your source for info is www.cpsc.gov
I went there and seached toilets, found none. Searched American Standard and found some HVAC stuff, nothing in the plumbing arena.
If you have followed various plumbing forums, you already know that there seemed to be a lot of earlier issues with the Champion, but the Champion 4 may have most of it resolved. The Cadet 3 is probably the best performance/value choice in the AmStd lineup, if you don't like pressure assisted toilets.