Mueller tells White House to preserve all documents related to Trump Jr.-Russia meeting

Special prosecutor Robert Mueller has formally asked the White House to preserve any documents it has about the now-infamous 2016 meeting between members of the Trump campaign and Russian nationals who claimed to have damaging information on Democratic rival Hillary Clinton.

CNN reports that Mueller "sent a notice, called a document preservation request, asking White House staff to save 'any subjects discussed in the course of the June 2016 meeting' and also 'any decisions made regarding the recent disclosures about the June 2016 meeting.'"

The request doesn't simply ask for official White House documents either, as it wants the administration to preserve all "text messages, emails, notes, voicemails and other communications and documentation" about the June 9 meeting.

The meeting, which took place in Trump Tower, involved several key Trump campaign officials, including Trump son Donald Trump Jr., as well as Trump son-in-law Jared Kushner and former campaign chairman Paul Manafort. The three men met with Kremlin-linked attorney Natalia Veselnitskaya, and it was billed to them as part of the Russian government's efforts to help Trump get elected.

The meeting is a key event in determining whether the Trump campaign colluded with the Russian government to interfere in the 2016 presidential election.