1 . SOCIAL SECURITY FOR MIGRANT WORKERS - COMMUNITY RULES - PERSONS COVERED - NATIONALS OF ONE OF THE MEMBER STATES - DATE ON WHICH THE CRITERION OF NATIONALITY MUST BE SATISFIED ( REGULATION NO 1408/71 OF THE COUNCIL , ART . 2 ( 1 )) 2 . SOCIAL SECURITY FOR MIGRANT WORKERS - COMMUNITY RULES - ENTRY INTO FORCE - INSURANCE PERIODS COMPLETED PREVIOUSLY - TAKING INTO CONSIDERATION - CRITERION OF NATIONALITY OF ONE OF THE MEMBER STATES ( REGULATION NO 1408/71 OF THE COUNCIL , ARTS . 2 ( 1 ) AND 94 ( 2 ))