Yes, Trump's Second Impeachment Trial Is Constitutional â Here's Why President Donald Trump listens during a roundtable about America's seniors, in the Cabinet Room of the White House, Monday, June 15, 2020, in Washington. Evan Vucci / AP Share Daniel Medwed | Feb. 9, 2021 The U.S. Senate is expected to begin the second impeachment trial against former President Doanld Trump today for his alleged role in last month's insurrection on the Capitol building. GBH Morning Edition host Joe Mathieu spoke with Northeastern University law professor and GBH News legal analyst Daniel Medwed about...