Compulsory Vaccinations in America?

What is going on in America these days? I haven't seen any evidence that there is a pandemic of Swine Flu, nor have I seen any reliable evidence that Swine Flu vaccines can actually prevent people from contracting it. But I have seen evidence that the Swine Flu vaccine can cause Epstein-Barr in people. If vaccines really worked, how can unvaccinated people be a threat to vaccinated populations. I have seen evidence that shows that vaccines can actually spread diseases rather than prevent them. This is a complex topic. It seems to me that if these vaccines were so safe, then why are the vaccine manufacturers working feverishly to pass legislation that makes them immune from lawsuit if/when their vaccines damage you or your children?