"Madonna knew the situation in Malawi, where he was born," Jolie was quoted as saying in this week's edition of Gala, a gossip magazine. "In that country, there isn't really a legal framework for adopting. Personally, I prefer to stay on the side of the law."
Jolie and actor Brad Pitt have three children: Maddox, adopted from Cambodia; Zahara, adopted from Ethiopia; and another daughter, Shiloh, who was born to the couple in May.
Human rights groups in Malawi have said they are concerned the government cut legal corners to fast-track the adoption and that they want adoption laws there clarified. A November court ruling allowed a coalition of rights groups to monitor the process.