U.S. President Donald Trump will be subject to the same Twitter rules as any other user when President-elect Joe Biden takes office on Jan. 20, the social media company confirmed this week. Twitter places “public interest” notices on some rule-breaking tweets from “world leaders” that would otherwise be removed. Such tweets from political candidates and elected or government officials are instead hidden by a warning and Twitter takes actions to restrict their reach. But the company said this treatment does not apply to former office holders. “This policy framework applies to current world leaders and candidates for office, and not private citizens when they no longer hold these positions,” a Twitter spokesman said in a statement. It has added multiple warnings and labels to tweets from the...