Translate the following English sentence to French:
"A directive might mean that some Member States will have great difficulty complying with it in its entirety from its coming into force, and this was not deemed to be practically or psychologically desirable by the Commission."
Certains États membres pourraient connaître d'énormes difficultés s'ils devaient se conformer à l'ensemble des exigences d'une directive. Et la Commission n'a pas estimé cela psychologiquement ou pratiquement souhaitable.