Why isn't this news? US Rabbis call for Gaza Cease-Fire

Today on page 17 of the NY Times, a group of prominent liberal rabbis and other religious and cultural leaders called for a cease-fire in Gaza. They were backed by over 2,800 American citizens. Because they could not get their opinion presented in the major media they had to buy this full page ad. Haaretz considered it news. So far no U.S. media have considered it news. Why not?