What Mattered Today: September 20, 2019

A suppressed whistleblower complaint was about President Trump's conversations with Ukraine, the global climate strike saw millions of children protest inaction on climate change prevention, and the U.S. lifted tariffs from 400 Chinese products. Plus, New York City Mayor Bill de Blasio dropped out of the 2020 presidential race, Facebook suspended thousands of apps, and the Trump administration seeks to send asylum seekers to El Salvador. Catch up on these headlines and more.

What Mattered Today: September 20, 2019

Photo: static01.nyt.com