President Trump’s “Liberation Day” tariffs came under their first major legal challenge Monday, brought by a libertarian public-interest firm that argues the president overstepped his authority. Trump’s April 2 announcement imposed a baseline 10 percent tariff on imports and targeted dozens of countries with higher “reciprocal” tariffs.

The Trump administration plans to isolate China through a tariff pressure campaign against over 70 U.S. trade partners, the Wall Street Journal reports.

China halted exports of a range of critical rare earth metals and minerals, such as samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium. China p

President Trump has ordered a probe that may result in tariffs on critical minerals, rare-earth metals and associated products such as smartphones.