Elon Musk's war on MAGA has gone nuclear after the billionaire CEO blasted a social media user's comments about H-1B visas Friday, and former Trump chief strategist Steve Bannon called him a "toddler" for his response. Musk liked a post that asserted Americans are too "retarded" to fill the country's tech workforce and supported the idea that top roles should be taken up by "better educated" people from overseas. A mere six minutes later, the Department of Government Efficiency co-head hit back at the commentator: "The reason I'm in America along with so many critical people who built SpaceX, Tesla and hundreds of other companies that made America strong is because of H1B." He added, "Take a big step back and F--- YOURSELF in the face. I will go to war on this issue the likes of which you cannot possibly comprehend."