Erin Burnett Outfront

DOJ sends letter to Mueller, says his testimony "must remain within the boundaries" of his report; Source: house judiciary dems holding mock hearing for Mueller; Source: house judiciary dems holding mock hearing tomorrow ahead of Mueller hearing Wednesday; Trump accuses Iran of lying about capturing CIA spies; Trump Suggest he could win United States war in Afghanistan in a week; DOJ sends letter to Mueller, says his testimony "must remain within the boundaries" of his report; Video shows 2020 candidate Tim Ryan reuniting with son; Warren says financial crash is coming, unveils new plan; Some Sanders 2016 supporters turning to Warren; Former Sanders supporters backing Warren: "He tried it in 2016, and he never made it"; President Trump the Wedding Crasher; via Knit