President Donald Trump announced on Truth Social that as part of its deal with Nippon Steel, U.S. Steel will remain at its Pittsburgh headquarters.

"The bulk of that Investment will occur in the next 14 months," he said.

The president added that he will visit U.S. Steel in Pittsburgh next Friday.

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President Donald Trump, taking reporter questions after signing executive orders on nuclear energy, was interrupted when his phone rang.

"Oh, it's a phone call. Do you mind?" he joked to reporters. "It's only a congressman," he added.

Seconds later, the phone rang again. He said it was "a different congressman" and that "they're all congratulating us."

Asked by one reporter if it was an iPhone, given his new tariff threats against Apple, Trump said, "Yeah, lucky it is."

President Donald Trump was asked again about the statements from Walmart executives who warned they would have to raise prices because of the tariffs.

The president again disregarded the warnings and reiterated his claims that consumers won't pay.

"Sometimes the country will eat it, sometimes Walmart will eat it, and sometimes it'll be something to pay something extra," he said.

President Donald Trump was asked about his threat to slap tariff on Apple if it doesn't build iPhones in the U.S. and the president said it could go beyond Apple

"It would be more. It would also be Samsung and anybody that makes that product, otherwise it wouldn't be fair," he said.

The president did not answer questions about the legality of issuing a tariff on a company.

Trump also brushed off criticisms that Apple has no plans to build its products in the U.S.

"A lot of it, so computerized," he said. Now these plants are amazing if you look at them. But they can do that.

Several Democratic senators called for the White House and President Donald Trump to release the names of the guests of Thursday night's crypto gala dinner.

"Donald Trump's dinner is an orgy of corruption," Sen. Elizabeth Warren, D-Mass., said. "He is signaling to anyone who wants to ask for a special favor and is willing to pay for it exactly how to do that."

Sen. Richard Blumenthal, D-Conn., accused the president of "selling out America" to foreign powers and putting America's national security at risk.

Blumenthal also pointed out that Thursday night's dinner is being held in secrecy when it is customary for the White House to release the guest list when a president of the United States holds a state dinner with foreign representatives.

"Donald Trump Is having 220 of the biggest investors, some more than $100 million in his meme coin, come to his private golf club without any disclosure, and apparently hiding, purposefully concealing, who they are, and some are from foreign powers," Blumenthal said.

The lawmakers pointed to several individuals who are expected to attend the dinner tonight or have expressed their intention of investing in the Trump coin in an effort to gain access to him, including controversial Chinese crypto mogul Justin Sun. Sun is not only the top holder of the Trump coin, but also among the top investors of World Liberty Financial, another crypto company founded by Trump's family members.

-ABC News' Soo Rin Kim and Lucien Bruggeman