June 23 (UPI) -- The Department of Justice subpoenaed four journalists for a grand jury hearing, though it later withdrew them after The Washington Post and the Wall Street Journal challenged them. One subpoena was for Washington Post reporter Ellen Nakashima and was related to sensitive reporting on a national security matter, The Post said . The department also issued subpoenas to three Wall Street Journal journalists, who also reported on national security issues, The Post reported. "The