Child support law in the U.S. ensures that both parents financially support their children post-separation or divorce. Each state has guidelines that consider factors like income, number of children, and custody arrangements to calculate support obligations. Courts can enforce these payments through wage garnishment, tax refund interception, or even revocation of licenses if payments are neglected. Child support typically continues until the child reaches the age of majority, though it might extend if the child is still in high school or has special needs. Modifications to support orders can be requested if there's a significant change in circumstances like income, employment, or child's needs. Enforcement and calculation specifics vary by state, but the overarching goal is to provide for the child's welfare and ensure both parents contribute appropriately.