22 U.S.C. § 441 : US Code - Section 441: Proclamation of state of war between foreign states

Search 22 U.S.C. § 441 : US Code - Section 441: Proclamation of state of war between foreign states

(a) Issuance of proclamation
Whenever the President, or the Congress by concurrent resolution,
shall find that there exists a state of war between foreign states,
and that it is necessary to promote the security or preserve the
peace of the United States or to protect the lives of citizens of
the United States, the President shall issue a proclamation naming
the states involved; and he shall, from time to time, by
proclamation, name other states as and when they may become
involved in the war.
(b) Revocation of proclamation
Whenever the state of war which shall have caused the President
to issue any proclamation under the authority of this section shall
have ceased to exist with respect to any state named in such
proclamation, he shall revoke such proclamation with respect to
such state.