Dow Jones futures fell slightly Monday morning, along with S&P 500 futures and Nasdaq futures. President Donald Trump said he'll send tariff letters to countries starting Monday, but the new rates won't start right away.

Dow futures fall as Trump confirms new tariffs set for Aug. 1. Market eyes Tesla, trade tensions, and earnings season kickoff.

Tesla shares sharply declined as CEO Elon Musk announced the launch of the 'America Party', sparking concerns over his focus. The new political venture follows Musk's public altercation with Trump, further pressuring Tesla's already dwindling stock performance.