The House passed H.R. 6003 which authorizes appropriations for Amtrak for Fiscal Years 2009-2013. An Amendment to the bill offered by Congressman Oberstar passed that included language to accommodate bikes on trains.
"..authorize intercity passenger rail grants to be used for bicycle access into rolling stock and would provide bicycle racks in trains..."
That bill has to be reconciled with the Senate version and the amendment is expected to be included.
Bike Racks on Amtrak's Cascades service which runs from Eugene Oregon to Vancouver BC.