Tonight, Sen. Amy Klobuchar on the mass murder in Minnesota. Meanwhile in DC, Trump's federal troops pick up trash and prosecutors have trouble with grand juries. And what's happening inside the CDC with late breaking news of high level resignations.

Tonight, Trump's sweeping tariffs are found illegal by a federal appeals court, teeing up a battle at the Supreme Court. Chris Hayes unpacks the ruling, the president's response, and what's next.