Answer :
The aspect of foreign investment that led President Donald Trump threatening to impose border taxes on multinational corporations is: Outsourcing to developing countries.
What is Outsourcing?
Outsourcing can be defined as the way in which a company hire a worker from another company to perform or carryout tasks in a their company.
Hence, Outsourcing to developing countries was the aspect of foreign investment that led President Donald Trump threatening to impose border taxes on multinational corporation during his tenure or administration.
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