You have been tasked to write a briefing memorandum for the US Secretary of State, to assist him in his forthcoming international negotiations that cover trade issues. While the Secretary of the Treasury will lead the negotiations, the Secretary of State wishes to be informed on the best available evidence on the impact of trade liberalization on domestic economic activity.
A number of briefing memoranda will cover the range of issues.
Your task is specific. The objective of the memorandum is to provide the Secretary of State with an assessment of a body of technical evidence on the impact of changes in trade regimes over the past twenty years on factor earnings. Specifically, the question is whether trade can be held responsible for widening income inequalities in developed countries.
Your briefing should explain both what trade theory would lead you to expect, as well as to provide an assessment of the empirical evidence that covers the experience of both developed, and emerging markets (explaining why both bits of evidence are required to answer the question).
References provided in a separate attachment list are required references that the briefing memorandum must cover. However, you may wish to consider additional evidence and material that you deem significant.

Graphs and charts are not required but may be used to supplement the data.

Be sure to properly cite and reference all materials and include proper in-text citations.