In July, President Jimmy Carter arrives in Charlotte. He and his team of volunteers are determined. They plan to construct 14 houses in five days for Habitat for Humanity, an organization that builds affordable housing for low-income families around the world. The work is back-breaking, but when it is done, the Optimist Park neighborhood has an entire block of new homes. The attention the project draws to Charlotte inspires donors to contribute $1.5 million to build more houses.Jimmy Carter works on Habitat