Translate the following English sentence to French:
"From time to time I find myself in difficulties, because the parliamentary committee of which I am Chairman has changed its name from the 'Committee on Institutional Affairs' to the 'Committee on Constitutional Affairs' ."
Je suis parfois embarrassé parce que la commission parlementaire que je préside a changé de nom et est passée de "commission des affaires institutionnelles" à "commission des affaires constitutionnelles".