decis council commiss april conclus agreement european commun govern unit state america applic competit law ec ecsc council european union commiss european commun regard treati establish european commun articl conjunct subparagraph articl thereof regard treati establish european coal steel commun articl thereof regard propos commiss regard opinion european parliament articl treati establish european commun invok ow inclus text agreement merger acquisit cover council regul eec decemb control concentr undertak essenti base articl increasingli pronounc intern dimens competit problem intern cooper field strengthen end commiss negoti agreement govern unit state america applic competit rule european commun unit state america agreement includ exchang interpret letter approv decid articl agreement european commun govern unit state america applic competit law includ exchang interpret letter approv behalf european commun european coal steel commun text agreement exchang interpret letter drawn english languag attach decis articl agreement appli effect septemb articl presid council author design person empow notifi govern unit state america approv agreement behalf european commun sign exchang interpret letter commiss design person empow notifi govern unit state america approv agreement behalf european coal steel commun sign exchang interpret letter luxembourg april council presid puech commiss presid santer opinion deliv januari oj march oj oj correct version oj