Thu 08 Aug 2003300 immigrants challenge moves to deport themSome 300 immigrant parents of Irish citizen children hoping to avoid deportation attended a crowded information meeting in Dublin yesterday.There was some confusion when half of the crowd was obliged to wait outside Liberty Hall for an hour, due to an unexpectedly high turnout.The organisers were forced to hold two successive public information sessions for up to 150 people each, instead of one meeting as originally planned, due to the capacity of the hall reserved.