The united states shall guarantee to every state in this union a republican form of government, and shall protect each of them against invasion."–u. s. constitution according to this quote, the job of protecting the nation from foreign enemies belongs

the local governments
each state government
the national government
international governments

based on this information, i would advocate against sweatshop labour because it exploits workers in unsafe working conditions with little pay. though sweatshops produce inexpensive goods, they harm the environment, workers, and often use unsafe materials to make consumer goods.

this is a good question! i'll do some research and come back when i have the answer!