An American teenager allegedly killed his parents as part of a plot to assassinate US President Donald Trump. Newly unsealed court documents reveal the Wisconsin teenager allegedly called for the assassination of the president and overthrow of the US government in written documents and text messages found by investigators. Nikita Casap, 17, allegedly murdered his parents in an attempt to gain the “financial means and autonomy” to carry out his plan, investigators said. Know the news with the 7NEWS app: Download today The teen is facing nine felony charges in Wisconsin — including two counts of first-degree murder and two...