A senior White House official denied Wednesday that the United States and 11 other Pacific Rim countries could renegotiate a sweeping free trade agreement, brushing off calls to revisit the text of the U.S.-led deal.

Renegotiation of the Trans-Pacific Partnership initiative is "not an option," Caroline Atkinson, deputy national security adviser for international economic affairs, told reporters in a teleconference.

"It's a 12-country trade agreement with an incredibly complex web of issues that are all intertwined," Atkinson said, adding revisiting sensitive issues "would risk unraveling the whole deal."