If you had asked me a couple years ago if the US government would try to "ban" bitcoin I would have said the odds were good. Nowadays though I don't see it happening. The growing trend is that the US government is fine with bitcoin and they see the benefits it offers to business, consumers, and the economy. They just want to make sure there's some proper regulations in place just like we have with fiat or credit cards or whatever. A framework so businesses know how to operate legally more than anything.
I'm not too worried about it. Not based on recent trends coming from the US government on bitcoin anyways.