Don't forget about the countless wars of aggression the US has waged virtually everywhere on the globe in the last 80 years, or the constant 'regime changing' in unstable countries, most of them leading to an endless stream of refugees that end up on European shores.

Right about now, the US was a major factor in Euromaidan, in an attempt to weaken both Russia and the EU (say hello to Mrs. Nuland, will ya?), which directly paved the way to today's Ukraino-Russian war.