Translate the following English sentence to French:
"We are all aware how difficult it is to improve a legal framework for investment funds, and how difficult it is to construct the European passport for management companies around particular standards which are to apply even-handedly across the board."
Nous savons tous à quel point il est difficile d'améliorer un cadre juridique destiné aux fonds d'investissement et de soumettre le passeport européen des sociétés de gestion à des normes précises qui font l'objet d'une interprétation uniforme.