Elon Musk's mother has taken the Biden administration to task for sidelining her son, accusing the White House of being ignorant of his achievements and businesses.

On Monday, Maye Musk, 73, berated the U.S. government for failing to acknowledge SpaceX's latest launch on Friday - the firm's 150th. 

Maye, who is a model, tweeted: 'Sharing this remarkable achievement with @JoeBiden @POTUS @VP @KamalaHarris who are completely unaware of the world's most advanced rockets and spacecraft.'

She added the hashtags: '#MadeInAmerica #JustSaySpacex.'

The company's Falcon 9 rocket delivered 40 spacecraft to orbit on Friday - SpaceX's fourth 'dedicated rideshare mission' and their 150th successful launch. The ridesharing program sees national space agencies like NASA and Germany's national space agency pay SpaceX to launch their satellites for them.  

Musk, the 50-year-old founder of SpaceX and Tesla, has always had an antagonistic relationship with Joe Biden, given Biden's strong support for unions and Musk's refusal to allow his workforce to unionize.

At White House events promoting electric vehicles, Musk has been notable in his absence - something he has repeatedly joked about on Twitter.  

It is not Maye's first time criticizing Biden for ignoring her son.

In November, after Biden visited GM's electric vehicle site - and told the CEO: 'You electrified the entire auto industry. You led' - Maye responded with laughing emojis.

Her son's Tesla holds 69.95 percent EV market share in the United States, a report last month found, with Nissan coming in at a distant second place with 8.51 percent.

'Biden's speech was written 20 years ago, just before GM killed the electric car,' Maye tweeted. 

'His speechwriter uploaded the wrong file.'

Musk himself has joined in the mockery, tweeting on November 21: 'Let's see if we can get them to say the word 'Tesla'!'

The South African-born billionaire has frequently found himself at odds with the Biden administration, criticizing their policies on pandemic lockdowns, payment cards and taking issue with taxation in Democrat-run areas.

In October, Musk moved Tesla's headquarters from California to Texas.

Musk's mother's chiding of the Biden administration came as Musk was revealed to have bought a nine percent share in Twitter - making him the largest shareholder.

Twitter's founder, Jack Dorsey, only owns 2.25 percent. 

Republican lawmakers praised Musk for protecting 'free speech' on Monday.

Congressman Lance Gooden, a Republican for Texas, who co-founded the Freedom From Big Tech Caucus, lauded Musk but said his purchase was a warning about the social media giant's 'power.'

'The fact that the world's richest man chose to outright buy Twitter rather than develop a new platform shows Twitter's monopoly power,' Gooden told DailyMail.com.

'I'm glad Elon Musk is stepping up to protect free speech, but Congress must act to put the rest of big tech in their place.'

Numerous Republicans have accused Twitter of 'censorship' including 'shadow banning,' which supposedly restricts a user's reach without their knowledge or appearing to do so.

Republican Study Committee Chair, Jim Banks, said on Monday: 'If [Elon Musk] can clean up Twitter and stop online censorship, I'm all for him taking over the whole damn thing.'

Anger at the platform spilled over when it permanently suspended Donald Trump's account early last year following the January 6 attack on the US Capitol. 

Some Republicans now hope Musk will have enough sway to get the ex-president back on.

'Now that [Elon Musk] is Twitter's largest shareholder, it's time to lift the political censorship. Oh… and BRING BACK TRUMP!' tweeted Lauren Boebert, the outspoken pro-Trump Colorado congresswoman.

Former Trump Treasury Department official Monica Crowley said: 'He should demand the end of political censorship, company-wide reform, and the reinstatement of President Trump.'