I wonder if he failed to realize the banks have already been fighting bitcoin. Accounts associated with bitcoin transactions are shut down just about every day. The US government has begun tying up any organization affiliated with bitcoin with a bundle of red tape. Bitcoin business is moving or growing outside of the US for these reasons. Everything short of declaring it illegal in the US has already taken place. I can only assume that the recent interest with subpeonas and meetings with BTC foundation are to get an understanding of exactly how to write that law in a way that it only applies to bitcoin, or other crypto forks. Digital currency is a whole lot more agile than US law, so they need to get it just right, and it needs to be a surprise.
That being said, the next step is "then you win".