Elon Musk isn't one to shy away from legal and regulatory battles with the billionaire currently being investigated by several different bodies and organisations for a multitude of things.
His purchase of Twitter only looks likely to add to his list of investigations, although that isn't new to him.
Tesla's chief executive has even landed himself in hot water on more than one occasion over his tweets.
Most notoriously, the US Securities and Exchange Commission (SEC) forced the South African entrepreneur to have all his tweets relating to Tesla approved by a company lawyer.
Back in 2018, Musk claimed he had secured funding to take the electric vehicle manufacturer private, sending the shares climbing, although the SEC determined that was never the case.
The billionaire also recently failed to disclose the acquisition of a 9.2% stake in Twitter within 10 days of the purchase.
SEC regulation requires investors to divulge when they have more than a 5% stake in a publicly-traded company within 10 days of passing the threshold, but Musk did not make that admission until 21 days later.
Given Musk is in the process of buying all of Twitter, it is unclear whether US law firm Schubert Jonckheer & Kolbe LLP are still pushing ahead with its investigation.
Currently, he and his brother Kimbal are under investigation over allegations of insider trading, once again by the SEC.
Last year, Kimbal sold US$108mln worth of shares in the electric carmaker a day before Musk once again took to Twitter, this time asking users whether he should offload 10% of his stake, sending shares falling.
Insider trading is prohibited and the investigation is likely centred on whether Kimbal was made aware of what his brother would go on to tweet a day later.
Aside from his own, personal legal battles, taking over stewardship of Twitter means he will inherit it long list of inquiries.
In the US, Twitter faces a Federal Trade Commission probe into allegations it violated a 2011 consent order by using data for security purposes to target userswith specific ads, with a potential fine in excess of hundreds of millions of dollars.
Police in India also registered several cases in relation to the availability of indecent images of children, showing politically sensitive regions outside a map of India on its website and inciting animosity between the Hindu and Muslim factions.
Aside from Musk’s and Twitter’s legal battles, Tesla and SpaceX, both companies of which he is chief executive, also have plenty to keep the lawyers busy.
Last year, The National Highway Traffic Safety Administration (NHTSA) confirmed it was investigating concerns that Tesla vehicles’ autopilot systems were responsible for several crashes.
In February, it confirmed a second investigation following complaints about “phantom braking”, with the vehicles activating the brakes unnecessarily.
SpaceX, Musk's space exploration company, is facing a lawsuit over the award of a NASA contract last year, with Amazon founder and bitter rival Jeff Bezos’ Blue Origins bringing the claim.
Today's other Twitter takeover news....
Tesla shares tumble as investors fear Elon Musk will sell stock to fund Twitter deal
Musk is believed to be part-funding the Twitter deal with US$21bn of his own equity as well as a further US$12.5bn loan secured against his Tesla stake.
Bill Gates has last laugh as Tesla's shares tumble
Bill Gates may have got the last laugh in his feud with Elon Musk after the soon to be Twitter owner confronted the Microsoft founder over shorting Tesla stock.
Jack Dorsey will bag nearly US$1bn as part of Musk's Twitter takeover, with other executives also set for a hefty payday
Dorsey, who co-founded Twitter in 2006 and is a former chief executive before stepping down last year owns nearly 18mln shares or a 2.4% stake in the company.