WASHINGTON -- The Trump administration is working with key lawmakers on a legislative fix that could enable the United States to remain in the Iran nuclear deal, Secretary of State Rex Tillerson said in an interview with The Associated Press on Friday.

The changes to the U.S. law codifying America's participation in the 2015 agreement could come as early as this coming week or shortly thereafter, Tillerson said. President Donald Trump faces a series of deadlines in the coming days about how to proceed with an accord he describes as terrible and too soft on Iran. While the talks involving administration officials and members of Congress wouldn't strengthen any restrictions on Iran's nuclear activity, as Trump also wants, they could result in face-saving measures that would persuade him to stay in the deal.

"The president said he is either going to fix it or cancel it," Tillerson told the AP as he sat in front of a fireplace in his State Department office suite. "We are in the process of trying to deliver on the promise he made to fix it."

Trump hasn't made a decision about what he'll do on Iran next week, when he must decide yet again whether to certify Tehran's compliance with the nuclear pact and continue granting its economy relief from years-old U.S. sanctions. In October, Trump declined to certify Iran's compliance, saying the sanctions relief was disproportionate to Iran's concessions and the agreement wasn't in America's national interests.

Nonetheless, Trump waived the sanctions for another three months. And he left the ultimate decision on staying in or quitting the deal for later while urging Congress to change the U.S. law concerning the certification. Trump's aides have said the president loathes having to give a thumbs-up to Iran every three months.

Tillerson said the administration was speaking with congressional leaders "on a very active basis" about a fix. He suggested Trump might be inclined to preserve the deal by waiving sanctions again Jan. 12 if there were signs Congress would act in short order.

One option lawmakers are discussing with the White House is removing the requirement Trump certify Iranian compliance. Another possibility is changing the law so certification occurs less often, officials said. Any changes would have to get significant support among Republicans, including many die-hard opponents of the nuclear deal, and some Democrats who largely support it.

It's unclear if changing the so-called Iran Nuclear Review Act will be enough to prevent Trump from tearing up the "worst deal ever," as he has time and again threatened. Tillerson said the administration's approach has been to first fix the U.S. law that governs how the U.S. adheres to the deal, and then work with European allies that helped broker the accord to address its shortcomings. Those flaws, Trump says, include the fact key nuclear restrictions on Iran expire after several years, and the lack of restrictions on Iran's ballistic missile testing.