In articles published in 1994 and 1995, I proposed that the Community Reinvestment Act (CRA) be modified to allow banks to trade their CRA obligations with one another in a manner analogous to cap-and-trade regimes used to address environmental pollution. As in the environmental protection context, a tradable obligation approach to the CRA has the potential to enhance the provision of financial services to low and moderate-income communities at lower cost than does the current command-and-control approach.