U.S. President Barack Obama on Monday signed into law legislation that gives him “fast-track” power to push ahead on a Pacific Rim trade deal that has been the subject of intense debate in Congress and across the nation.

Flanked by some of the lawmakers who supported the bill through a six-week congressional battle, Obama acknowledged that his fight to secure the 12-nation Trans-Pacific Partnership was far from over.

Republicans, who traditionally support free trade deals, backed Obama and helped get the legislation through Congress. But they faced obstacles from skeptical Democrats, who worry the trade deal will hurt American jobs, and were pressured by unions to vote against the bills.

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