I'm also a migrant. Most of us in the thread are, actually, in one way or another.

But, it's like you say, a handful of American's moving to your neighborhood makes for better burgers, cooler digital projects, a world-class basketball team, and livelier church music. A million Americans moving to your neighborhood is just an invasion and will turn you into America del Oste. (I mean, Germany is essentially occupied by Americans, so that's not mere conjecture.)