In 2001, Obama was coauthor of a law that created a tax credit for people who donate land, buildings or construction material to help develop low-income housing.

• 2001年，奥巴马与人合作，草拟一件法案，为那些帮助廉价房建设捐出土地，建筑，或建材的人提供税收抵免优惠。