Senate vote nears, background check bill in peril Associated Press Copyright 2013 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Updated 5:42 am, Wednesday, April 17, 2013 WASHINGTON (AP) — A bipartisan effort to expand background checks is in deep trouble as the Senate approaches a long-awaited vote on the linchpin of the drive to curb gun violence. In the run-up to the roll call expected Wednesday, so many Republicans had declared their opposition to the background check measure that supporters — mostly Democrats — seemed headed to defeat unless they could turn votes around in the final hours. The concealed weapons amendment, seen by advocates as protecting gun rights, was vehemently opposed by gun control groups, who say it would allow more guns into states with stricter firearms laws. The votes were coming a day after former Rep.