An immigration judge has given the US government a day to provide evidence that Columbia University student Mahmoud Khalil should be deported, with a ruling expected on Friday. The Trump administration claims that Khalil's status as a lawful permanent resident has been revoked and that he should be deported for withholding information on his visa application. Khalil's lawyers argue that he is being targeted for his political views. Khalil's wife, who is a US citizen, is due to give birth to their first child soon and has been unable to visit him in detention.