Notification of measures taken to address the threatened impairment of the national security from titanium sponge imports : communication from the President of the United States transmitting notification of measures taken to address the threatened impairment of the national security from titanium sponge imports, pursuant to 19 U.S.C. 1862(c)(2); Public Law 87-794, Sec. 232 (Public Law 100-418, Sec. 1501(a)(3); (102 Stat. 1258)).