An extraordinary legal showdown took place over Trump’s invocation of an 18th century wartime act to deport hundreds of immigrants to a prison in El Salvador.

Karen Ebel and Grace Shimizu, whose fathers were held prisoner in U.S. internment camps, explain the grave cost of

The president’s invocation of the wartime law enacted in 1798 was quickly blocked by a federal judge. It had only been used three times before in U.S. history.