How is that quantifying impact on the U.S. innovation? It shows people being moved out of a bunch of countries and to another but I see no demonstration of that positive impact.
The US has a giant net influx of inventors (some of whom arrive on a H1B), which presumably creates wealth, jobs, etc.
Isn't this the key part, isn't that graph rather irrelevant to the H1B discussion if it doesn't specifically point out the H1B numbers?
As an aside the H1B is an abusive system that depresses technical wages and oppresses the visa holders who can lose their residency on the whims of large corporations.