This document provides an outline for Chapter 7 of a textbook on international trade. The chapter discusses how governments influence trade through various policies and instruments. It begins with an opening case study on textile trade restrictions between the US, Europe and other countries. The chapter then outlines the economic and noneconomic rationales governments use to intervene in trade, including protecting domestic industries and managing balance of payments. Finally, it examines the major instruments governments use to restrict or regulate trade, such as tariffs, subsidies, quotas and other nontariff barriers that directly or indirectly influence prices and quantities traded.