WASHINGTON    -   President Donald Trump’s deal to avert his threatened tariffs on Mexico includes few new solutions to swiftly stem the surge of Central American migrants flowing over America’s southern border.

But it delivers enough for Trump to claim a political win.

The decision — announced by tweet late Friday — ended a showdown that business leaders warned would have disastrous economic consequences for both the U.S. and one of its largest trading partners, driving up consumer prices and driving a wedge between the two allies. And it represented a win for members of Trump’s own party who had flooded the White House with pleading calls as well as aides who had been eager to convince the president to back down.

But ultimately, it gives Trump the ability to claim victory on a central campaign promise that has been largely unfulfilled as he prepares to formally launch his 2020 campaign.

“In the face of naysayers, President Trump yet again delivered a huge victory for the American people,” Trump campaign spokesman Tim Murtaugh said in a statement, applauding the president for using “the threat of tariffs to bring Mexico to the table” and “showing that he is willing to use every tool in his toolbox to protect the American people.”

Trump ran in 2016 pledging to crack down on illegal immigration, but instead has watched as the number of border crossings has spiked to its highest level in over a decade — with U.S. Border Patrol apprehending more than 132,000 people in May, including a record 84,542 adults and children traveling together. That surge has been straining federal resources, leaving officials struggling to provide basic housing and health care to families fleeing violence and poverty in Honduras, Guatemala and El Salvador.

With Trump overseas and an unproductive opening negotiating session with Mexican officials Wednesday, many at the White House had expected Trump to move forward with the 5% tariff he’d threaten to slap on all Mexican goods on Monday in an effort to strong-arm the country into action, according to people familiar with the deliberations.

Aides including Vice President Mike Pence and Secretary of State Mike Pompeo were no personal fans of the policy, but they understood Trump’s frustration and presented several suggestions to the Mexican delegation to walk him back. They also made clear that Trump was dead set on the tariffs without dramatic action.