There is definitely a shortage of top tech talent domestically in USA if you consider that USA has more top tech companies than the rest of the world combined.

There is definitely a shortage of top tech talent domestically in USA if you consider that USA has more top tech companies than the rest of the world combined. The only way to reasonably distribute top talent to those companies is to either accept lots of high quality immigrants or to move some of them abroad to spread out the competition for talent.