President Trump said on Friday that he would not grant Apple waivers on tariffs for Mac Pro parts the tech giants produced in China.

Trump wrote that Apple would not face tariffs if it made its products solely in the U.S.

“Apple will not be given Tariff waiver, or relief, for Mac Pro parts that are made in China. Make them in the USA, no Tariffs!“ the president tweeted.

Apple will not be given Tariff waiver, or relief, for Mac Pro parts that are made in China. Make them in the USA, no Tariffs! — Donald J. Trump (@realDonaldTrump) July 26, 2019

Earlier this week, Apple asked that certain Mac Pro parts be exempt from the proposed 25% tariff on imports from China, filing several requests to the Office of the U.S. Trade Representative. The tariff has not yet been enacted, but the Trump administration initiated an "exclusion process" to exempt some imports from the tariff by permitting waivers.

White House economic adviser Larry Kudlow told reporters Friday that the president is "the decision-maker" when asked if Trump specifically refused Apple's request for a waiver.

"There’s some talk that [Apple] would be moving some of their production facilities to Texas," Kudlow said. "If they do that, that’d be a very good thing."

Since taking office, Trump has consistently demanded that Apple move production of more of its iPhones, Macs, and iPads into the U.S. and out of China.

But other products have been allowed exemption from the tariffs, including the Apple Watch and AirPods, due in large part to Apple CEO Tim Cook's bidding with the president.

Cook was able to get Trump to take those devices off a list that singled out $200 billion of Chinese imports.