Translate the following English sentence to French:
"It is very important that all the EU institutions operate effectively and efficiently and the 370 million citizens of the European Union must support and have confidence in the Union's internal legislative processes."
Il est très important que toutes les institutions européennes agissent effectivement et efficacement, et les 370 millions de citoyens européens doivent soutenir et avoir confiance dans le processus législatif interne de l'Union.