This week on Matter of Fact, a look at the struggle to reunite families split up at the U.S.-Mexico border. Correspondent Jessica Gomez talks to a mother who was deported and hasn’t seen her sons since 2017. Plus, were there warning signs before the deadly attack on the U.S. Capitol? Soledad O’Brien talks with former DHS analyst Daryl Johnson who says there were, but they were dismissed. And, “Writing into the Wound.” Soledad O’Brien talks with NYT best-selling author Roxane Gay about her new essay speaking to the hurt felt by the nation over the past year through a pandemic, racial injustice and volatile politics.