France, Sept. 2 -- The European Union has insisted it will continue to enforce its regulations on technology companies, despite threats from US President Donald Trump to impose tariffs in response to what he claimed were rules that disadvantage American firms.

The EU's rules protect rights, including freedom of expression, the bloc's digital chief Henna Virkkunen said Monday on X, posting a letter addressed to the US Congress.

"I will keep enforcing them, for our kids, citizens and businesses," she wrote.

Last week Trump threatened to add tariffs on all countries with digital taxes, legislation or regulations, saying they were designed to harm or discriminate against American technology,

He has consistently criticised the EU's two mai...