What Mattered This Week: January 13-17, 2020

This week the Senate formally opened the impeachment trial against President Trump, paving the way for more feuding between Democrats and Republicans over witnesses. Plus, the U.S. military revealed that several Americans were injured in the Iranian missile strike, contradicting President Trump's claim that none were harmed, and the Senate approved the USMCA trade deal, a NAFTA rewrite. Read up on these and more of the week's top headlines.

What Mattered This Week: January 13-17, 2020

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