In late January, nearly 70 abortion rights activists from across Mexico gathered in a city along the US-Mexico border. For three days, they huddled in hotel conference rooms, video chatting with activists in the US, who had been unable to travel due to Covid-19 and an Arctic cold front. Together, they strategized how to support Americans as abortion restrictions proliferated across the US. “It was three days of very, very, very, very cold outside, but very, very warm inside,” Verónica Cruz Sánchez, director of Las Libres, a feminist organization based in Guanajuato, Mexico, said. Over the course of the long...