What are the differences between outsourcing and in-sourcing? Which of the two,

What are the differences between outsourcing and in-sourcing?
Which of the two, in-sourcing or out-sourcing the United States Administration has favored up to the present. (Please compare with the previous administration)
Imagine that you are an economist working as a policymaker in the United States Administration. Which of the two situations would you advocate? What would it be your advice about the impact of out-sourcing (or in-sourcing) on the country’s Gross Domestic Product? Why?