That's the conclusion regarding the public from the Pew Research Center's latest poll on the topic. 
A couple points stick out:
- some opposition comes from people who think the law did not go far enough.
 - there is a difference in attitudes between the old and young. The old are more likely to oppose it while the young are more likely to favor it.
 - people are more confused about what's in the bill now than they were six months ago.