Trade unions and liberal politicians would say that they do. Global economists, business leaders, and conservative politicians would say that they do not protect our jobs and in fact can hurt our economy.
An example would be the prohibition we had against importing advanced computerized machine tools from Japan. This was enacted to protect US machine tool makers. The problem is that other countries who imported and used these machines from Japan were able to manufacture better quality products for better prices than the US companies that were forced to use inferior equipment - some jobs were saved, more were lost.
An example would be the prohibition we had against importing advanced computerized machine tools from Japan. This was enacted to protect US machine tool makers. The problem is that other countries who imported and used these machines from Japan were able to manufacture better quality products for better prices than the US companies that were forced to use inferior equipment - some jobs were saved, more were lost.