PBS News Hour S41 E13 January 19, 2016

Tuesday on the NewsHour, the Supreme Court will hear the case against President Obama’s executive action allowing 4 million undocumented immigrants to stay in the U.S. Also: U.S. Envoy Brett McGurk reflects on the prisoner exchange with Iran, China’s economy grows at its slowest rate in decades, an author explores the autism spectrum and a new nursing program is boosting kids’ brainpower.