Summary: The U.S. House officially voted to send articles of impeachment against President Donald Trump to the Senate Wednesday, and an impeachment trial could begin as early as Tuesday. But you might be forgiven if you forgot this all started back in August with a whistleblower's complaint about a phone call between Trump and Ukraine's president, Volodymyr Zelensky. The complaint was major news, but speaking out against government impropriety isn't new in American politics.
