Complex sentence: In May 2007, "Time" magazine reported that Pope Benedict XVI, expressing support for the Mexican bishops in the face of that country's first legalization of abortions (in the Mexico City), declared that such Catholic politicians should be denied communion and excommunicated.
Split into simpler sentences: In May 2007, Pope Benedict XVI expressed support for the Mexican bishops in the face of that country's first legalization of abortions (in Mexico City). According to "Time" magazine's interpretation, this support amounted to a declaration that such Catholic politicians should be denied communion and excommunicated.