White House Senior Advisor Elon Musk walks to the White House after landing in Marine One on the South Lawn with U.S. President Donald Trump (not pictured) on March 9, 2025 in Washington, DC.Tesla shares fell in premarket trade on Monday after CEO Elon Musk announced plans to form a new political party.The stock was down 7.13% by 4:27 a.m. E.T. Musk said over the weekend that the party would be called the "America Party" and could focus "on just 2 or 3 Senate seats and 8 to 10 House districts." He suggested ...