How immigration agents tried to build the case that Columbia University was ‘harboring aliens’

Teams of federal agents checked databases, obtained photographs, knocked on doors and heard what they thought was a woman speaking with an Indian accent. They also conducted days of surveillance and subpoenaed video footage and access card data as they tried to build a case that Columbia University was illegally sheltering students said to be harmful to the United States, newly unsealed court documents show.

​ Teams of federal agents checked databases, obtained photographs, knocked on doors and heard what they thought was a woman speaking with an Indian accent. They also conducted days of surveillance and subpoenaed video footage and access card data as they tried to build a case that Columbia University was illegally sheltering students said to be harmful to the United States, newly unsealed court documents show. Read More Breaking News, Latest News and Videos | CNN