AP Photo 
"Think of these people as best in class, the top brains of their respective country. They are restless, driven to create value, and at the forefront of incubating/spawning new companies or industries," Quinlan writes to clients. "They are smart and mobile, and on the move to one country in particular: the United States."
Canada, Australia, and Singapore outrank the U.S. in terms of international migrants as a percentage of total population, but the U.S. has 57.1% of the world's immigrant inventor community, according to World Intellectual Property Organization data.
And other countries don't even come close. Quinlan answers why:
Think world renowned universities, notably those strong in R&D. America's entrepreneurial eco-system is another draw, with Silicon Valley long a magnet to the world's best and brightest. The U.S.' lead in innovation and technological advancements is yet another force pulling inventors to America; ditto for America's respect for intellectual property rights, world-class standard of living, internet freedoms and pursuit of the American dream, or the potential for unfathomable wealth.
Here's the global breakdown:
U.S. Trust
U.S. Trust