Hundreds of thousands of Americans lost their lives in two world wars to make USA a superpower. You are willing to give that up because of $$$? When πΊπ¦ run our of manpower you can turn to π΅π±, π·π΄, π±πΉ, πͺπͺ,.... Take a lesson from π¬π§, they defended their empire using whoever they could find. In last two world wars they won using Americans.