investigators are digging into the attackers criminal record, his on line anti-trump rants. were there any signs he was headed in this direction? so this attack is testing the resolve of unity from president trump and lawmakers as their charity baseball game goes on tonight as planned. meanwhile, the washington post is reporting that special counsel robert mueller is investigating president trump for possible obstruction of justice. the president slams this probe as phony and the biggest witch hunt in american political history. we have it all covered for you. let s begin live in all sand rea, virginia. the fbi ramps up their investigation with with the help of other agencies and local law enforcement, calling for the public to come forward with any information they have as they try to dig into how and why he carried out this horrific attack.