Some of the leading US companies founded by first/second generation immigrants:
  1. Apple
  2. Google
  3. Amazon
  4. Oracle
  5. IBM
  6. Yahoo
  7. EMC
  8. eBay
  9. AT&T
  10. Tesla
Note that the combined net market value of these companies, as of today, is more than USD 2.7 trillion and President Trump is not aware of it.