Since presidential communication with the world via Twitter squalls is a relatively new ‘thing’…should campaigning on what is recognized as the president’s official account be allowed? I am sure there is nothing in campaign law that covers this yet. And the law hasn’t clearly been established on whether @realDonaldTrump is an official account or a personal account. At some point that should be cleared up. Although some early case law around blocking dissidents under First Amendment arguments have started precedents around it.
So campaign law and government ethics codes should be updated to clarify the use of Twitter in an official capacity vs. a personal capacity vs. campaigning. For a president the distinctions between the first two will probably be difficult to delineate.
So in the meantime the @realDonaldTrump gets to do this: