On Sunday, NewsHour Weekend explores the experience of undocumented children alone in the U.S. Over the past few years, officials have been stunned by a surge of unaccompanied minors fleeing brutal violence from Central America who continue to pour in across the southern border. While immigration courts process thousands of cases, about half of these children are forced to navigate the complex system of available relief options without a lawyer because the government does not provide representation -- increasing the likelihood of deportation. Now, as immigration advocates call for a broader policy response, NewsHour's Ivette Feliciano reports on a new lawsuit challenging how the federal government treats unaccompanied minors making their case to stay.