and later, my conversation with senator kiersten gillibrand. but first we are following a wave of breaking news. rudy giuliani tells "the new york times" and nbc news robert mueller will seek to conclude his investigation into collusion with russia by september 1st. so far we have not heard anything from the special counsel ourselves. robert costa from the washington post reports an important asterisk. that deadline might hold true if the president sits for an interview. at the same time, president trump ordering the justice department to investigate an if in fib informant who was used in the early stages of the russia probe. the president tweeting, quote, i here by demand and will do so officially tomorrow that the department of justice look into whether or not the fbi/doj infiltrated or surveilled the trump campaign for political purposes. as for the president using the power of his office to intervene in an ongoing justice department