(b) Measures decided by the arbitrators should not be applied cumulatively with national or other provisions in respect of the same factual elements which constitute the infringement whether they have already been decided or are decided subsequently . 7 . The US and EC must take measures specified by the panel in its determinations. If the US or EC fails to implement such measures and they are unable to agree on appropriate compensation or other remedial action , then the other party may propose to the panel suspension of equivalent benefits under this Agreement to the non-complying party. Such suspension shall take effect 30 days after it is proposed to the panel unless the panel disapproves such action . Article 6 1 . This Agreement shall enter into force on the date of its acceptance by both parties and shall remain in force until 31 March 1992 . 2. This Agreement may be amended by mutual consent of the US and EC to take into account any new situation which may arise, in particular the results of the Uruguay Round negotiations. 3 . Each party shall have the right to terminate this Agreement in the event of termination of the Arrangement concerning trade in certain steel products and the Arrangement on pipes and tubes entered into in 1989 . 4 . The provisions of this Agreement only concern steel and for the purpose of this Agreement, 'steel' shall mean those products described in Article 3 of the Arrangement concerning trade in certain steel products and the Arrangement on pipes and tubes entered into in 1989 . 5 . This Agreement shall be of application in the territories described in Article 11 of the Arrangement concerning trade in certain steel products and the Arrangement on pipes and tubes entered into in 1989 . 6 . This Agreement does not affect the rights and obligations of the parties under the GATT or other multilateral instruments negotiated under the auspices of the GATT. I shall be grateful , Mr Vice-President, if you would kindly confirm that the foregoing correctly sets out the understanding reached between us . Please accept, Mr Vice-President , the assurance of my highest consideration. Sincerely, Caria A HIT I Ç