Another senator, Rand Paul of Kentucky, was a staunch opponent of giving the White House promotion authority. He has repeatedly called for the administration to make public more details of the agreement.
Sen. Ted Cruz or Texas originally supported giving the White House TPA, saying that he "could not in good conscience vote against a bill whose most significant impacts will be jobs, growth, and opportunity for struggling American families." By June, Cruz flipped, voting against TPA because of what he said was backroom dealmaking on the issue.
Mike Huckabee came out against the pact in October for a similar reason. He accused the White House of crafting a deal representing "a handout to insiders, interest groups, Obama's allies and Asia."
Some GOP candidates, however, are waiting until the full details of the agreement are publicly available before they announce a position..
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Ben Carson — who stands in second place behind Trump in major national polls — criticized the negotiation process behind the deal, but admitted that he supports free trade in general. New Jersey Gov. Chris Christie took a similar approach, saying that the devil will be in the details for the TPP.
Former HP CEO Carly Fiorina has also told news organizations she supports free trade, but doesn't trust the Obama administration to broker an advantageous deal.
"What I hear is a bunch of sound bites and a bunch of selling points. And he does not have a track record of the details matching his selling points," she told NBC's "Meet the Press."
Louisiana Gov. Bobby Jindal has similarly said he is a proponent of free trade, but he doesn't "trust" Obama, and is wary of the international deal serving as a back door to put environmental regulations in place. Rick Santorum, a former Pennsylvania senator, has also indicated in several interviews that he is skeptical of the agreement.
On the other side of the debate is Ohio Gov. John Kasich, who said earlier this month he thinks he supports the TPP deal, but will withhold judgment until he sees details. In addition to the economic effects of the agreement, Kasich said he favored the geopolitical advantages of further entrenching U.S. interests around the Pacific Rim.
Former New York Gov. George Pataki has been relatively silent on the issue, and his office did not immediate return a request for comment.