President Trump's impeachment trial officially begins in the Senate, with a reading of the articles of impeachment. Rep. Adam Schiff, D-Calif., began reading the articles on the Senate floor, officially starting the trial in which senators will determine whether Trump should be removed from office. After the articles are read, Supreme Court Chief Justice John Roberts will be summoned to preside at the trial and will be sworn in at 2 p.m. Then senators will be sworn in. Ref. USAToday.