It should be pointed out that it was a Bush spokesman who is being quoted in GUEST,Apollo's 30 Oct 04 - 02:05 AM post. Here's the full quote:

Steve Schmidt, a Bush spokesman, said Kerry is partly to blame because he opposed legislation in 2003 shielding vaccine-makers from some lawsuits as a way to entice more companies into the market. "Once again, John Kerry proves he has no solutions to offer, only attacks," Schmidt said.

GUEST,Apollo, which legislation, specifically, did Kerry oppose? If you don't provide the specifics and a link to your source, I'll take that to mean that you can't because it didn't happen.