International trades and foreign exchange rate

International Trade Speech
Assume that you have a team which has been appointed as speech writers for the Speaker of the House. The team must write a speech which the Speaker must deliver about the current state of the U.S. macroeconomy to a number of amateur reporters who are unfamiliar with economics.

Prepare a 350- 500-word speech in simple terms and concepts that focus on international trade and foreign exchange rates.
Integrate a summary of your answers to the following questions and cite external research to further justify your facts:
Why doesn't the U.S. simply restrict all goods coming in from China? Why can't the U.S. just minimize the amount of imports coming in from all other countries?