Its already been done, GE pushed for the ban. GE makes the CFLs of course.
Manufacturing has nothing to do with the souce of raw materials. Someone stands to make tons of money on the sale of mercury, and money is the only thing that would have convinced Congress to force this potential hazard into our homes.
GE was also one of the largest manufacturers of standard incandescent light bulbs in the world. They're now going to have to close their standard light bulb manufacturing facilities, or completely retrofit those factories to make CFLs and LED bulbs.
I don't get the upside of this for them.