Former President Barack Obama and New York Mayor Zohran Mamdani have met for the first time at a child care center, where they read to children and led a sing-along. The meeting comes as Mmandani, a democratic socialist, is trying to establish a working relationship with Republican President Donald Trump, who has previously met with him to discuss issues affecting New York City. The former two-term president has offered to be a sounding board for Mmandan.