The US government changed the rules governing how people can seek asylum at the US-Mexico border this week as a pandemic-era policy called Title 42 expired. Although it may become more difficult, thousands of people are still making their way from South America to the US border, including migrants from all over the world. Manuel Rueda reports from the Darién Gap, a dangerous jungle that separates Colombia and Panama, where he met three families from Afghanistan taking an extraordinary journey to try and reach the United States.