Superstar Madonna arrived in America on Sunday with her son David as she prepares to further defend her controversial adoption of the tot. Madonna and husband Guy Ritchie were granted an interim adoption of the 13-month-old boy earlier this month, which has sparked anger amongst groups in his native Malawi, who claim the singer broke the country's adoption laws. The Material Girl appeared on US TV show Oprah last week, declaring her love for the little boy and praised her biological children Lourdes and Rocco for being so welcoming to the little boy. On Sunday, Madonna and her three children flew out of London's Heathrow Airport to New York City, where she is expected to appear on NBC News, The Today Show and Dateline to defend her adoption.