Obama says European unity under strain from migration, could hurt U.S.

U.S. President Barack Obama said on Friday that European unity was under strain from the flows of migrants pouring into the region and the United States could also suffer economically and strategically as a result. "I wouldn't describe European unity as in a crisis but I would say it is under strain," Obama told a joint news conference in London with British Prime Minister David Cameron. "We consider a major national security issue that you have uncontrolled migration into Europe, not because th