The US National Archives and Records Administration says President Donald Trump's tweets are considered presidential records that need to be preserved for historic purposes.
But officials have yet to say whether his administration needs to preserve even altered or deleted tweets.
After a misspelled statement from Trump's private Twitter account was altered on Sunday and later deleted, an archives spokeswoman said today that officials had yet to say whether those records are also subject to preservation.
Trump tweeted the day after his inauguration that he was "honered" to serve the American people.
The tweet was later corrected to "honored" and then later removed entirely.
Archives spokeswoman Miriam Kleiman said that presidential tweets, like all electronic communications "created or received" by the president or his staff, are considered presidential records.