Analyze why trade barriers were implemented(political and economic reasons) and the consequences for the US and the world.

Impact of trade barriers with china on the US and World economy

Please write this paper with a perspective of business and politics. Analyze why trade barriers were implemented(political and economic reasons) and the consequences for the US and the world.
General Structure
1.Introduction
2.background on tariffs and other trade barriers. The usual reasons for imposing them (like supporting domestic firms and producers)
3.Specific background on the issue. Specific industries and businesses. Political reasoning for this policy.
4. Analysis and Implications for business and the economy (US and world)
5. Unintended consequences.
6. Good bad in short/long term
7. Conclusion – good policy or bad, what should be changed