He didn't vote on S.2248 according to Votesmart.org
National
Key Vote
FISA Amendments Act of 2007

Bill Number:
S 2248
Issues:
Business and Consumers,
Civil Liberties and Civil Rights,
Legal Issues,
National Security Issues,
Technology and Communication
Date: 02/12/2008
Sponsor:
Sen. Rockefeller, John IV (D-WV)



Record Vote Number 20
Bill Passed (Senate)
How members voted
(68 - 29)
Senator Barack Obama did not vote
Now as he was there that day to vote on S.3907 an ammendment to S.2248, why didn't he vote on S.2248?
S.2248 passed