21 sovereignty, or the indepedence, or the territorial or admin-
 
2 istrative integrity of any nation, whose sovereignty, inde-
 
3 pendence, and territorial and administrative integrity the
 
4 United States is obligated by treaty to respect.
 
5    SEC. 2. The President shall issue from time to time as
 
6 may be necessary public proclamations specifying articles
 
7 and materials to be retained within the United States and
 
8 denied export therefrom under this Act, and the extent to
 
9 which and the terms and conditions under which such articles
 
10 and materials shall be so retained and denied export. Any
 
11 such proclamation shall become effective on the date specified
 
12 therein.
 
13   SEC. 3 Any proclamation issued under section 2 of this
 
14 Act, together with a statement of the facts upon which it
 
15 is based, shall be transmitted by the President to the Con-
 
16 gress forthwith, or, if the Congress is not in session, at the
 
17 beginning of the next session. If the Congress shall ther-
 
18 after disapprove of such proclmnation by concurrent resol-
 
19 tion, such proclamation shall not be effective after the date
 
20 of such concurrent resolution.
 
21 SEC. 4. The President may, from time to time, pro-
 
22 mulgate such  rules and regulations, not inconsistent with
 
23 law, as may be necessary and proper to carry out any of
 
24 the provisions, of this joint resolution; and he may exercise
 
25 any power or authority conferred on him by this joint reso-