Buttigieg: I'm worried Trump would take foreign dirt; McConnell to Dems: Time to move on, "The case is closed"; McConnell: I'm the "Grim Reaper" when it comes to Dem agenda; Warren, O'Rouke, Booker face off in first night of debates, with Biden, Sanders, Harris, Buttigieg set for night two; Justice dept. to weigh in on subpoena for Trump's tax returns; Warren releases minority business plan as she rises in polls; Trump predicts he'll run against Biden, Sanders, or Warren; Trump campaign acknowledges Trump trailed Biden in key states in internal polling in March; Outrage from Flint residents as all charges are dropped against officials accused of causing water crisis; Flint Mayor reacts to charges being dropped against officials charged in water crisis; Some Flint residents "Re-Traumatized," "Horrified" over charges being dropped against officials for water crisis; Trump: "I'm not going to fire" Conway over hatch violations; Trump: "I'm not going to fire" Kellyanne Conway over hatch act violations, "she's a terrific person"; via Knit