Secret evidence in judicial hearings

Links to crypto are weak (maybe!) but I think this may be of interest to some on the list: Associated Press reported yesterday: "A former NASA researcher has been ordered deported as a suspected North Korean agent following a hearing at which he was not allowed to see all the evidence against him. [...] Lee was ordered [deported] on Friday by federal immigration Judge Michael Suarez, partly on the basis of classified FBI information that Suarez refused to divulge to either Lee or his attorney, Herbert Gee. Lee said neither he nor his lawyer was allowed to attend the government's closing statements Wednesday."