Terrorist Nationality Act of 2014 - Amends the Immigration and Nationality Act to include among the grounds for loss of U.S. nationality by a native-born or naturalized citizen:
(Eliminates the grounds for loss of U.S. nationality by entering or serving in the armed forces of a foreign state if such armed forces are engaged in hostilities against the United States, or by serving as a commissioned or non-commissioned officer in such armed forces.)