1. The tweet wasn't news, his arrest was news 2. The tweet wasn't evidence for a crime, it was evidence that a warrant was justified, and other evidence include

1. The tweet wasn't news, his arrest was news 2. The tweet wasn't evidence for a crime, it was evidence that a warrant was justified, and other evidence included a supposed admission to the FBI. See http://www.wired.com/wp-content/uploads/2015/05/Chris-Roberts-Application-for-Search-Warrant.pdf http://www.wired.com/wp-content/uploads/2015/05/Chris-Robert...