Twitter is seeking to expand its product features and policies after President Trump repeatedly pushed a conspiracy theory regarding the death of a staffer who worked in former Rep. Joe Scarborough’s congressional office.

The social media platform apologized on Tuesday morning for the president’s insinuation via Twitter that Scarborough, now a television host on MSNBC, may have been responsible for Lori Klausutis’s 2001 death, which has prompted calls for the company to remove the tweets.