task the CBO/US Mint to evaluate future fixed and variable costs in order to decide when pennies should be discontinued.

The cost of producing the lowest form of currency available will inevitably lead to it's eventual discontinuation. The best way to evaluate what needs to be done is formal research on the topic, leading to an educated answer on what should be done, and when. Because of the wide economic impact that this would have, it's important to know all the benefits and potential problems that this might cause. In addition, this would allow cheaper prices for two of the most widely used forms of metal.