The White House has drafted an executive order for President Donald Trump's signature that would open an investigation into the practices of Google, Facebook and other social media companies.

The order, which officials say is still in its preliminary stages and has yet to be run by other law enforcement agencies, instructs US antitrust authorities to 'thoroughly investigate whether any online platform has acted in violation of the anti-trust laws'.

The goal of the order is to 'protect competition among online platforms and address online platform bias'.

While the draft obtained by Bloomberg doesn't name any companies specifically, it is understood to target social media entities such as Facebook, Google and Twitter, which Trump has repeatedly accused of silencing conservative voices and news sources.

The White House has drafted an executive order that if signed by President Donald Trump would open an anti-trust investigation into the practices of Google, Facebook and other social media companies (stock image)

Trump hinted at his plan to address possible bias within media companies in a tweet last month, writing: 'Social Media is totally discriminating against Republican/Conservative voices.

'Speaking loudly and clearly for the Trump Administration, we won't let that happen. They are closing down the opinions of many people on the RIGHT, while at the same time doing nothing to others.'

Days later Trump slammed Google for not highlighting his State of the Union speech on its front page despite having always done so for President Obama.

However, that claim was found to be false as Google did in fact promote the address just as it had for Trump's predecessor.

Trump has repeatedly accused social media platforms of intentionally silencing conservative voices and news sources

Top officials from Twitter and Facebook testified before Congress earlier this month, maintaining that the sites did not make any intentional efforts to censor views from the right nor the left.

Still, the Justice Department announced the same day that Attorney General Jeff Sessions would meet with state attorneys general to determine if tech companies are 'intentionally stifling' free speech on their platforms.

'The Attorney General has convened a meeting with a number of state attorneys general this month to discuss a growing concern that these companies may be hurting competition and intentionally stifling the free exchange of ideas on their platforms,' a Justice Department spokesman said.

More concerning than the political aspect of the drafted executive order is the antitrust aspect - which could end up costing companies millions.

Google, Facebook and other sites have been accused of anti-competitive behavior by pundits on both sides of the aisle.

The companies have argued that they do in fact face robust competition and especially given that many of their products are free.