barden would likely become chairman of a committee overseeing health care and says hearings would begin as soon as january to dismantle the law. >> we will try to repeal it and replace it with something that makes sense. >> reporter: right away? >> the sooner the better. >> reporter: that threat comes as new portions of the law go into effect this week. stopping insurance from denying coverage to children with pre-existing conditions and dropping those who get sick. still, recent polls show the law remains unpopular. >> i voted against the health care bill. >> reporter: even some democrats are running against it. health and human services secretary kath 13 sebelius says people will come around. >> reporter: why is the law unpopular? >> i think it's more confusing than unpopular. >> reporter: you would grant it's unpopular? not as popular as you would like? >> that's accurate.