I believe that it will have a positive impact because if bitcoin is going to be banned by the government, it will be all over the news and people are going to talk about it. In the attempt of taking down bitcoins, they instead would end up making it more popular and popularity/hype is what we need to make bitcoin go mainstream.

Bitcoin was made so people wouldn't have to be so controlled by the government. Even with the regulation, bitcoin will be still usable by the people because there is no way that the government can sensor everything about bitcoin. Even if they do, there will be ways to bypass ISP censorship through a VPN. This might be reason why other governments haven't banned bitcoin yet. It's pointless.