1 . SOCIAL SECURITY FOR MIGRANT WORKERS - POWERS OF THE COUNCIL TO ADOPT MEASURES - SCOPE ( EEC TREATY , ART . 51 ) 2.SOCIAL SECURITY FOR MIGRANT WORKERS - FAMILY BENEFITS - PENSIONERS - BENEFITS PAYABLE BY THE STATE OF RESIDENCE OF THE RECIPIENT OF AN INVALIDITY PENSION - HIGHER BENEFITS PREVIOUSLY GRANTED BY ANOTHER MEMBER STATE - RIGHT TO AN ADDITIONAL BENEFIT ( REGULATION NO 1408/71 OF THE COUNCIL , ART . 77 ( 2 ) ( B ) ( I ))