Days after Tesla CEO Elon Musk threatened to take legal action against Minnesota Governor Tim Walz following his "Nazi salute" remark, both are engaged in a heated war of words on X, formerly known as Twitter. The world's richest man and Democratic leader had a massive face-off on social media which ended in Musk dismissing Walz- effectively saying that nobody remembers him."The richest man in the world is sitting at the Resolute desk, about to defund your public school. Trump should stop him," Kamala Harris' vice presidential candidate Walz wrote. Walz hit out at the tech billionaire due to DOGE's alleged interference in administrative matters against which many Democratic leaders have expressed apprehensions."What's your name again? I forgot," Elon Musk replied directly to Tim Walz.ALSO READ: In a first, deadly virus from Nipah family 'Camp Hill' found in US: Know its symptomsDOGE gets access to federal payment systemElon Musk is heading Department of Government Efficiency (DOGE) to cut federal spendings in the US. DOGE recently got access to federal system and is now scanning each department to identify wastage. This has given Elon Musk and the team he is leading a powerful tool to monitor and potentially limit government spending.All federal employees on DOGE's advice have been sent an email asking them to resign by February 6 under a deferred resignation program in which they will get all benefits through September if they resign now, or else they will have to work from office.Elon Musk also wants to shut down United States Agency for International Development (USAID). DOGE team had a stand-off with USAID regarding some access following which Elon Musk announced that USAID would be shut down as President Donald Trump too agreed on this. As USAID's future hangs in a balance, DOGE is now studying other departments and the next to come under the axe is the department of education -- which Tim Walz referred to in his angry post.ALSO READ: After Microsoft and Amazon, US' largest private employer Walmart to cut jobs: All you need to knowWhat Trump said on Musk's interference?Trump reacted to Elon Musk's interference in the administration and said Elon can't do anything without the approval of the administration. Trump asserted that if there is any conflict of interest, Elon Musk would not be allowed to go near that subject. White House press secretary Karoline Leavitt confirmed that Elon Musk has been abiding by all laws in his new role at DOGE.Meanwhile, a new poll by the Economist/YouGov revealed that the Republican support for Elon Musk's upending of US government system has been shaken. The number of Republicans who want Musk and his DOGE to have a "lot" of influence in the Trump administration has fallen significantly to 26 per cent while the figure was 47 in November immediately after Trump's election win.ALSO READ: 'No one voted for Elon Musk': JD Vance on why Tesla CEO has so much power as billionaire plunges US govt into chaosWill Elon Musk take legal action against Tim Walz?Last month, Musk threatened to sue Tim Walz after the former Democratic Vice Presidential candidate claimed the Tesla CEO did a 'Nazi salute' at Donald Trump's inauguration. During an interview with MSNBC's Rachel Maddow on Tuesday night, Tim Walz said how Americans had spent three days debating whether Elon Musk had made the fascist hand gesture last week. "We spent three days debating trying to debate that Musk gave a Nazi salute. Of course he did," the governor of the US state of Minnesota was seen as saying in a video widely shared on X.'Of course he did', the Democratic governor declared.A social media user posted the video of Tim Walz with the caption, "Creepy Tim Walz says 'of course' Elon did a Nazi salute. I hope Elon sues him for all he’s worth." Replying to the post, Elon Musk commented, "I think I will. Tim Walz is a creepy."ALSO READ: Boston University employee sparks controversy with 'wanted dead or alive' threat against Elon Musk's DOGE employeesOne X user slammed Walz's interview, writing: 'I hope Elon sues him for all he's worth'. Elon Musk came under fire for placing his right hand on his chest before extending his arm diagonally upward with his palm facing down at US President Donald Trump's inauguration event on January 20. He repeated the motion twice. Musk, the world's richest man and a close ally of President Trump, was speaking at the Capital One Arena in Washington DC when he made the gesture. Some on X, the social medial platform he owns, likened the gesture to a Nazi salute, though others disagreed. The signal was quickly scrutinized online, prompting critics to allege the gesture was an overt reference to Adolf Hitler and the Nazis.Claire Aubin, a historian who specializes in Nazism within the United States, said Musk's gesture was a 'sieg heil,' or Nazi salute. My professional opinion is that you're all right, you should believe your eyes,' Aubin posted on X, aligning with those who found the gesture was an overt reference to Nazis. The gesture resembled the salute used in Nazi Germany and fascist Italy, leading to various interpretations. Some described it as a "Roman salute," while others saw it as an expression of joy or an awkward movement. In response, the SpaceX and Tesla chief posted on X: "Frankly, they need better dirty tricks. The 'everyone is Hitler' attack is sooo tired."