cjrgreen: There are all sorts of reasons for "colony collapse disorder". The combination of pesticides and moving around (many beekeepers travel, since you can't bring the trees to the bees) is especially deadly.
The pesticide you mentioned is "imidacloprid" (Bayer, sold under many trade names), which is especially toxic to bees. France banned it (as well as related insecticides) over the hypothesized link to CCD; however, the ban (which has been in effect for more than 10 years) has not reduced the incidence of CCD. Inversely, Australia (which has not banned imidacloprid) has no serious CCD problem (and is a major exporter of bees). So the evidence has not been swept under the rug, but is equivocal at best.
GameRager: And how many farmers actually obey the bans? Do we have proof they're all doing so?
Well, the French government monitors for presence of imidacloprid in captured bees and honey and hasn't reported that the ban is being avoided, so the best answer is yes, the ban is holding.
Germany, Slovakia, and Italy have also banned imidacloprid and other neonicotinoids, so far without apparent reduction in CCD.
The problem is more complex than a single family of insecticides, and nobody is sweeping anything under the rug. This has had scientists puzzled for years. As is usual in any science, the answer is always more complicated than you want it to be.