With The Open Border, They Can

From the Chicago Tribune: The Islamic State militant group that has seized large parts of Iraq and drawn the first American air strikes since the end of the occupation in 2011 has warned the United States it will attack Americans "in any place" if the raids hit its militants.
The video, which shows a photograph of an American who was beheaded during the U.S. occupation of Iraq and victims of snipers, featured a statement which said in English "we will drown all of you in blood".  http://www.chicagotribune.com/news/nationworld/chi-islamic-state-message-to-america-20140818-story.html
So, who is going to stop them?  The Border Patrol?  Not with our open border that was burst wide open by Obama.
The Department of Justice?  Hell, they are sending a ton of manpower to Missouri for a cop shooting a thug.
Sadly, because of Obama's failed foreign policy, The Islamic state is quite wealthy by robbing banks and taking over oil fields and selling the oil, so they can finance their terror attacks in the U.S.