Translate the following English sentence to French:
"Moreover, the rejection of two compromise amendments during the sitting bears witness to the difficulty of finding representative majorities, as does the rejection or acceptance, by the narrowest of margins, of institutional measures of the highest importance."
Le rejet en séance de deux amendements de compromis témoigne du reste de la difficulté de trouver des majorités représentatives ainsi du reste que le rejet ou l'acceptation de justesse de dispositions institutionnelles de première importance.