In a flurry of posts on his social media platform X, Musk called the president's trade adviser "truly a moron," escalating an increasingly bitter tariff spat.

Billionaire Elon Musk blasted President Donald Trump's senior trade advisor Peter Navarro as "truly a moron" and "dumber than a sack of bricks" on Tuesday in a growing rift over the US tariff

We’re going to raise about $100 billion with the auto tariffs alone … In addition, the other tariffs are going to raise about $600 billion a year, about $6 trillion over a 10-year period.” — Peter Navarro,