We have seen the government of China and Russia attempting to declare bitcoin illegal and we know they did not get anywhere with it, instead bitcoin took center stage in both countries. It is now already to late for any government to want to ban bitcoin, because bitcoin has become mainstream and people are the wiser that change in the way we know and see money is inevitable.
Besides, at no time would all the government across the globe be able to reach an accord to ban bitcoin and one strong point, is that bitcoin is not tied to any one country or government. They are sure to come up with some funny laws to frustrate the freedom that bitcoin represents, but it is for us, the community to remind them that power actually belongs to the people.