The European Union’s resolve to take on the might of Silicon Valley is set to be tested to the limit after Donald Trump threatened retaliation for fines that hurt some of America’s biggest companies.

Apple is among tech giants unveiling plans about how they plan to invest billions in the United States as they face potential tariffs and tech policy changes during President Trump's second term.

Tariffs are anti-growth policies that reduce income and job growth, increase the cost of living, and lower overall economic efficiencies.