I was only supposed to be in Miami for the briefest of layovers. I was en route to San Francisco from São Paulo in Brazil, where I had participated in the NETMundial Conference on Internet governance along with hundreds of members of civil society, technology executives, journalists, and government officials. It was going to be a tight connection even if things had gone smoothly, but I was not free to leave. Someone wanted to ask me some questions, noted the U.S. Customs and Border Protection (CBP) officer holding my well-worn passport. Go stand against that wall, he told me, dropping my passport into a box attached to his booth: someone will be by to collect you.