Please call Senators Isakson and Chambliss. While they were supporters of the bill at the beginning, it seems that their support has somewhat waned. They have said that the emergency 4.4 billion dollar funding does not go far enough to appease their constituents. Their lines are currently busy, but you can leave them a message.
Thank them for their concern, and also urge them to support the pending immigration reform bill the Senate.
(202) 224-3521 - Chambliss
(202) 224-3643 - Isakson