If the US government wanted to take bitcoin down, why waste $30mill doing so. They can just declare all aspects of bitcoin usage / trade illegal with severe jailtime. With their influence they could then convince all other western institutionalized countries to do the same thus removing the value of the currency.
Opinions on this forum are getting funnier and funnier. You think that when the US government declares all aspects of something illegal with threat of severe jail time, that it stops it happening? If that were true there would be no 'terrorism', no 'murder', no 'cocaine imports from south america'.
Get real man, all it does is drive the price up!