Senate approves ` fast track ' trade authority in win for Obama . 
A critical aspect of President Barack Obama 's economic legacy got a boost on Wednesday when the Senate voted to approve giving him "fast-track" authority to negotiate a sweeping 12-nation trade pact without the threat of Congress adding amendments or filibustering the final deal . 
The series of surprising votes came mere hours after President Obama headed to Capitol Hill earlier that morning in a last-minute effort to try to sway Democratic House members to support his trade agenda -- a move that rankled some Democrats .
A critical aspect of [TGT] 's economic legacy got a boost on Wednesday when the Senate voted to approve giving [TGT] "fast-track" authority to negotiate a sweeping 12-nation trade pact without the threat of Congress adding amendments or filibustering the final deal . 
The series of surprising votes came mere hours after [TGT] headed to Capitol Hill earlier that morning in a last-minute effort to try to sway Democratic House members to support [TGT] trade agenda -- a move that rankled some Democrats .