"Of course, the tensions around immigration are not new. On the one hand, we’ve always defined ourselves as a nation of immigrants -- a nation that welcomes those willing to embrace America’s precepts. Indeed, it is this constant flow of immigrants that helped to make America what it is. The scientific breakthroughs of Albert Einstein, the inventions of Nikola Tesla, the great ventures of Andrew Carnegie’s U.S. Steel and Sergey Brin’s Google, Inc. -– all this was possible because of immigrants.
So this steady stream of hardworking and talented people has made America the engine of the global economy and a beacon of hope around the world. And it’s allowed us to adapt and thrive in the face of technological and societal change. To this day, America reaps incredible economic rewards because we remain a magnet for the best and brightest from across the globe. Folks travel here in the hopes of being a part of a culture of entrepreneurship and ingenuity, and by doing so they strengthen and enrich that culture. Immigration also means we have a younger workforce -– and a faster-growing economy -- than many of our competitors. And in an increasingly interconnected world, the diversity of our country is a powerful advantage in global competition."
-- from the Remarks by the President on Comprehensive Immigration Reform