"The Senate could consider as early as today a resolution promoted by AIPAC intended to effectively endorse the continuation of the Israeli military assault in Gaza. (You can find the text of the draft resolution on AIPAC's web page.)"
In particular, the resolution does not call for an "immediate ceasefire," but for a "durable and sustainable ceasefire," which is the Bush Administration's code for continuing the war - the excuse the Administration has given for why the war must go on. Nor does the resolution call for ending the blockade on Gaza, even though the blockade is also an act of war.
Call your Senators now. Urge them to insist that any resolution passed by the Senate call for an immediate ceasefire and for lifting the blockade on Gaza.
Last Friday, Amnesty International USA sent an "urgent" letter to Secretary of State Rice, calling on her to end the Bush Administration's "lopsided response" to the ongoing Israeli military attacks on Gaza that have reportedly killed more than 600 Palestinians, including some 200 children. "Amnesty International USA is particularly dismayed at the lopsided response by the U.S. government to the recent violence and its lackadaisical efforts to ameliorate the humanitarian crisis in Gaza," the letter said. Amnesty urged the Bush Administration to "go beyond rhetoric and exert concrete pressure on both parties to immediately cease unlawful
The resolution now goes to the House, where there is likely to be more friction (unlike the Senate, many House members have spoken out against the assault.) You can use the same link for contacting the House.