President Donald Trump warned that the United States will impose "substantial" new tariffs on any nation that continues to levy digital services taxes or other measures he says discriminate against American technology companies. In a statement posted on Truth Social late Monday, Trump declared that he has placed "all countries with digital taxes, legislation, rules, or regulations on notice." Trump added that, in addition to tariffs, Washington would introduce export restrictions on advanced technologies and semiconductor chips destined for those nations. He did not specify a timeline or identify particular countries, but several European and Asian economies have introduced or proposed digital levies in recent years, drawing previous criticism from U.S. officials. The threat marks a fresh escalation in trade tensions, coming on top of existing U.S. tariff regimes and technology controls. While the White House did not immediately provide further details, Trump's comments signal that digital taxation could become the next major flashpoint in U.S. trade policy, potentially affecting billions of dollars in cross-border commerce.