President Donald Trump is doubling down on his controversial tariffs program and has called on Americans to "hang tough" amid stock market turmoil over the last few days. 

Trump, in a post on Truth Social Saturday morning, wrote that his plan is already working with trillions of dollars already being poured into the U.S. economy.

"We are bringing back jobs and businesses like never before. Already, more than FIVE TRILLION DOLLARS OF INVESTMENT, and rising fast! THIS IS AN ECONOMIC REVOLUTION, AND WE WILL WIN," Trump wrote. 

HERE'S WHAT TRUMP IS REALLY UP TO WITH HIGH-STAKES TARIFF GAMBIT

This week's steep losses for the S&P 500 and the Nasdaq were among the worst in the past decade as stocks tumbled for a second day in a row. On Friday, the Dow Jones Industrial Average plunged 2,231.07 points, or 5.5%, while the S&P 500 and Nasdaq Composite fell 5.97% and 5.82%, respectively. The Nasdaq entered into bear market territory on Friday.

Trump implemented a 10% baseline tariff on all imported goods into the United States while some countries were slapped with higher tariffs.

But Trump remains defiant that his plan will work in the long term as he aims to reduce America's trade deficit with other countries, protect American industries and bolster jobs by encouraging companies to move manufacturing back to the U.S.

"HANG TOUGH, it won’t be easy, but the end result will be historic," Trump wrote. "We will, MAKE AMERICA GREAT AGAIN!!!" Trump wrote. 

Trump took aim at China after the communist country clapped back to Trump’s Liberation Day tariff announcement with a reciprocal 34% tariff on U.S. imports.

"China has been hit much harder than the USA, not even close," Trump wrote. "They, and many other nations, have treated us unsustainably badly. We have been the dumb and helpless "whipping post," but not any longer."

Trump’s 34% tariffs announced against China on Wednesday come in addition to the 20% tariffs already imposed against the country.

HOW WE GOT TO LIBERATION DAY: A LOOK AT TRUMP'S PAST COMMENTS ON TARIFFS

"China played it wrong, they panicked — the one thing they cannot afford to do," Trump wrote Friday on Truth Social.

The back and forth has raised concerns about a global trade war and possible recession.

The new Chinese tariffs against the U.S. will go into effect on April 10, according to The Wall Street Journal.

Companies who sell their goods to China were hit hard on Friday, including those in aerospace, agriculture and heavy equipment.

Some of Thursday’s biggest losers — banks, airlines and technology companies — sank again on Friday. Others, such as retailers, clothing and restaurants, were down but not nearly as bad. A handful, like Nike, even posted small gains on Friday.

The so-called Magnificent 7 stocks that have dominated the market the past few years had some of the heaviest losses. Apple, Microsoft, Nvidia, Alphabet, Amazon, Meta and Tesla have lost around $1.8 trillion in market value combined in the past two days.

Meanwhile, a conservative legal group is challenging President Trump's tariffs on China, calling them "an unlawful attempt" to make Americans pay higher taxes on Chinese imports. 

The Fox Business team and The Associated Press contributed to this report. 

Amazon Prime has exclusively licensed a documentary film for global theatrical and streaming release that will give viewers an "unprecedented behind-the-scenes look" at First Lady Melania Trump's life, Fox News Digital has learned. 

Fox News Digital has learned that the project is expected to be released globally in theaters and for streaming use in the second half of 2025. 

Filming for the upcoming documentary began in December 2024. The documentary will be executive produced by First Lady Melania Trump and Fernando Sulichin of New Element Media, with Brett Ratner of RatPac Entertainment serving as director. 

Prime Video is expected to share more details on the project as filming progresses, and will release plans when finalized, Fox News Digital has learned. 

MELANIA TRUMP TO RELEASE 'COLLECTOR'S EDITION' OF MEMOIR FEATURING IMAGES PHOTOGRAPHED BY FORMER FIRST LADY

"We are excited to share this truly unique story with our millions of customers around the world," an Amazon spokesperson said in a statement. 

The announcement comes just weeks before Mrs. Trump will return to the White House as first lady of the United States of America. 

It also comes months after the release of her first-ever book, "Melania." The memoir presents an intimate portrait of Melania Trump and includes personal stories and family photos she had not previously shared with the public. 

"Melania" has been at the top of the New York Times’ best-selling list since its release to the public. 

MELANIA TRUMP LAUNCHES 'ON THE MOVE' DIGITAL PHOTO SERIES HIGHLIGHTING HER 'FAST-MOVING LIFE'

In November, just days after President-elect Trump was elected the 47th President of the United States, Mrs. Trump also rolled out a digital photography series to highlight her life on the 2024 campaign trail and at home. 

Trump told Fox News Digital in an interview last year that if she had the privilege to serve as first lady again — which she will, beginning on Jan. 20, 2025 — she would continue to prioritize initiatives focused on the well-being and development of children to ensure they have the "support and resources they need to reach their full potential." 

"My focus would continue to be creating a safe and nurturing space for children to learn, grow and thrive," she said.  

During the first Trump administration, Mrs. Trump hosted virtual roundtables on foster care as part of her "Be Best" initiative and focused on strengthening the child welfare system. She worked with members of Congress on legislation that secured funding for grants awarded to youth and young adults currently or formerly in foster care to help pay for college, career school or training. The bill ultimately was signed by then-President Donald Trump in December 2020.

GET TO KNOW DONALD TRUMP'S CABINET: WHO HAS THE PRESIDENT-ELECT PICKED SO FAR?

Since leaving the White House, the former first lady has also created special edition Non-Fungible Tokens. A portion of those proceeds also went toward her initiative "Fostering the Future" to secure educational opportunities and scholarships for children in the foster care community.

"Fostering the Future" students are currently enrolled in multiple colleges and universities across the country, with areas of focus primarily on technology and computer sciences. 

"Writing my memoir has been an amazing journey filled with emotional highs and lows," Mrs. Trump told Fox News Digital last year. "Each story shaped me into who I am today." 

She said that "although daunting at times, the process has been incredibly rewarding, reminding me of my strength, and the beauty of sharing my truth." 

Companies that previously feuded with President-elect Trump are now making seven-figure donations to his 2025 inauguration.

Trump has butted heads with several Fortune 500 company executives over the years, but following his presidential election victory in November, some of those same big-business leaders are dropping major cash on the incoming president's exclusive inaugural festivities. 

"In the first term, everyone was fighting me. This time, everyone wants to be my friend," Trump recently said at Mar-a-Lago, according to The Washington Post.

Meta, the world's largest social media network headed by Mark Zuckerberg, suspended Trump's Facebook and Instagram accounts in 2021 after the events of Jan. 6 — which Trump called an "insult" to his voters. In his new book, titled "Save America," Trump accused Zuckerberg of "plotting" against him in 2020. 

DOJ SEEKS TO BLOCK JAN. 6 DEFENDANTS FROM ATTENDING TRUMP INAUGURATION

"He told me there was nobody like Trump on Facebook. But at the same time, and for whatever reason, steered it against me," Trump wrote. "We are watching him closely, and if he does anything illegal this time he will spend the rest of his life in prison — as will others who cheat in the 2024 Presidential Election."

Trump, in his book, also accused Zuckerberg of "always plotting to install shameful Lock Boxes in a true PLOT AGAINST THE PRESIDENT."

However, the relationship appeared to change course as the election drew nearer. After Trump's Butler, Pennsylvania, assassination attempt in July, Zuckerberg said Trump's fist pump in the air after suffering a bullet wound to the ear was "one of the most bada-- things I've ever seen in my life."

Shortly after Trump won the election in November, Zuckerberg met with the incoming president at Mar-a-Lago. Just weeks later, Meta donated $1 million to Trump's inauguration fund. 

JOHNSON ALLIES URGE TRUMP TO INTERVENE AS MESSY SPEAKER BATTLE THREATENS TO DELAY 2024 CERTIFICATION

"Mark Zuckerberg has been very clear about his desire to be a supporter of and a participant in this change that we're seeing all around America, all around the world with this reform movement that Donald Trump is leading," Trump adviser Stephen Miller said during an appearance on "The Ingraham Angle."

Despite a yearlong clash between Amazon's billionaire founder, Jeff Bezos — who also owns The Washington Post — and the incoming president, the e-commerce company recently pledged to donate $1 million to Trump's inauguration fund.

After Trump told Fox News' Sean Hannity in 2016 that Amazon was "getting away with murder, tax-wise," Bezos fired back at the then-presidential candidate.

Bezos, appearing at a technology conference, said that Trump's comments were "not an appropriate way for a presidential candidate to behave."

"Washington Post employees want to go on strike because Bezos isn’t paying them enough. I think a really long strike would be a great idea," Trump wrote in another hit at the billionaire on X, then Twitter, in June 2018. "Employees would get more money and we would get rid of Fake News for an extended period of time! Is @WaPo a registered lobbyist?"

The mood appeared to have shifted following the 2024 election, when Bezos said he was "very optimistic" about Trump's regulatory agenda.

"I’m very hopeful — he seems to have a lot of energy around reducing regulation," Bezos said at the New York Times DealBook Summit. "My point of view is, if I can help him do that, I’m going to help him."

When Ford agreed to make a deal to meet California's efficiency standards, the company defied then-President Trump's plans to push back on the state setting its own green energy standards for automakers. 

Trump voiced his opposition to the auto giant's decision, saying that Henry Ford, the company's founder, would be "very disappointed if he saw his modern-day descendants wanting to build a much more expensive car that is far less safe and doesn’t work as well, because execs don’t want to fight California regulators."  

Ford, one of the world's largest automakers, recently announced it will be making a seven-figure donation to Trump's inauguration in January. 

Other major automakers, such as GM and Toyota, will also make individual donations of $1 million to Trump.

Trump will also receive a $1 million inauguration donation from Intuit, whose stock recently dropped in November after it was reported that the Department of Government Efficiency (DOGE) was considering creating a free tax-filing app.