Disallowing foreign talent and relying on domestic potential the USA will inevitably fall to the scientific level of the rest of the competing nations. The latt

Disallowing foreign talent and relying on domestic potential the USA will inevitably fall to the scientific level of the rest of the competing nations. The latter are not attracting talent due to various reasons like language barrier or low economic motive. Now the USA has its own reason. The next scientific leader will be the one that poses no barrier.