Buffett's plan proposes creating a market for transferable "import certificates", (ICs) that would represent the right to import a certain dollar amount of goods into the United States. These transferable ICs would be issued to US exporters in an amount equal to the dollar amount of the goods they export and they could only be utilized once. They could be sold or traded to importers, who must purchase them in order to legally import goods into the USA. The price of ICs are set by (free-market) forces, and are therefore dependent on the balance between entrepreneurs' willingness to pay the ICs market price for importing goods into the USA and the global volume of goods exported from the USA, (i.e. supply and demand).