I think the government will rise its level of control to all the bitcoin site in US and outside (they can do if they really want). However I do not like to see "bitcoin" correlated with the word terrorist, because the people will continue think that it is a bad thing (but all we know that it is not a bad thing). As it is written in the article:
'He in no way came across as any sort of extremist,' O'Bryant said. '
My hope is that there was some kind of misunderstanding, that he didnt know who he was helping.'