Elsevier has announced that it has withdrawn its support for the US Research Works Act (HR 3699). In their announcement they explain: We are ready and willing to work constructively and cooperatively to continue to promote free and low-cost public access through a variety of means, as we have with research funders and other partners around the world.

You may read Elsevier's announcement: http://www.elsevier.com/wps/find/intro.cws_home/newmessagerwa