The federal immigration minister says he's reviewing what can be done when Canada wants to deport someone who has no home country.
Jason Kenney says he'll get a briefing from his officials on the question following revelations that one of the men charged in an alleged plot to attack a Via Rail train could not be deported because he is a stateless Palestinian.
Raed Jaser came to Canada with his family as a teenager in 1993 but was unable to obtain Canadian citizenship because of criminal convictions.
Federal authorities wanted to deport Jaser in 2004 but there was nowhere to send him.
Jaser, 35, of Toronto, and Chiheb Esseghaier, 30, of Montreal, face terrorism-related charges in what the RCMP says was a plot guided by al-Qaida elements in Iran.
It emerged this week that Jaser was also arrested in August 2004 after authorities issued a warrant for his removal from Canada.