You asked a question though but honestly for now, there is no atmosphere of anything that will stop the current bull run except in the future if one of the largest exchanges crashes or institutional investors begins a massive selling of their bitcoins if not the only thing that can happen will be for the price to DIP and bounce back after sometimes because a lot of investors now have faith in bitcoin more than any other digital currency and since there is a global rising interest in bitcoin now, anything that will lead to a decline in the current bull trend may as well affect the global economy.

Even if US makes laws that will go against bitcoin, the price will only DIP and experience growth again in the future. Inasmuch as there are some regulatory framework by the United States SEC and other regulatory body, i don't think the United Sates of America will want to makes laws against bitcoin, besides they still hold the highest bitcoins among countries in the world so it's not as if any other country has more bitcoins than them. However, bitcoin is still valued in the dollars which has been the currency of the US so everything about bitcoin is still to their own advantage.