Egyptians are preparing to vote on a new constitution, again. When the last constitution was approved, President Mohamed Morsi of the Muslim Brotherhood was in power. He was ousted in July. The latest constitution was drafted by the military-backed government that ousted Morsi. Nathan Brown, who studies constitutionalism and rule of law in the Arab world, talks to Robert Siegel about what's at stake in the process, and the criticism the draft constitution has received. Brown is a professor at George Washington University and a scholar with the Carnegie Endowment for International Peace.