Mexico and other oil exporting countries are meeting in an attempt again to restrict output and boost price. Ross Perot proposed a significant tax on oil imports. Paper Paper is a renewable resource of special importance in the Canadian economy. Copper Copper is an important mineral in the production of electronics, automobiles, and building wiring. As a non-renewable resource we might be concerned about long run supplies.
Copper is also important in international trade with Chile and a few other countries.
The price of milk has been kept above market clearing rates since the 1930s. The recent change in agricultural policy will eliminate the federal control of milk prices. But a number of state legislatures, including Tennessee's, have considered petitioning Congress to create an interstate compact to allow the states to sustain the milk cartel. The price of pork shows cycles that extend over several years. The production of pork is undergoing radical technical change with large scale production supplanting small scale production.