The document discusses the potential impacts of new mortgage regulations on the housing market. It suggests that regulations from Dodd-Frank and Basel III could reduce the number of mortgage loans by up to 20%, leading to 600,000 fewer home sales. Borrowers who do not meet the criteria for a qualified residential mortgage may have difficulty obtaining loans or pay higher interest rates. Overall, the new rules aim to make the mortgage market safer but may also constrain credit availability and drive up costs for some borrowers.