AG Barr Has Submitted His Letter To Congress By John Light | March 24, 2019 3:47 pm JOIN TPM FOR JUST $1 Read it here. John Light (@LightTweeting) is TPM's managing editor, based in New York. He previously worked as a producer for Bill Moyers and WNYC and his written for The Atlantic, Slate, Reuters and Grist. Have a tip? Send it Here!