I know it's hard to think sometimes, but here goes: the main argument against the MMR vaccine is that there's a study linking it to autism. That study has largely been discredited. Second, the government should not interfere with my healthcare. The group who sponsored the aforementioned study is a quite libertarian sect who has delusions about rivaling the AMA.
What liberal has ever wanted less government? Liberals dreamed up Obamacare. Liberals want Norwegian-style nationalized health care. It just doesn't make sense.
Straight from the Liberals Bible:
http://www.nytimes.com/2015/02/05/us/pol...geons.html?_r=0BTW, Randy Paul wasn't pictured getting a MMR booster. It was hepC. Plus, Randy Paul is already Autistic.