stay tuned that is just ahead. new calls for a wider investigation into the sex scandal rocking the secret service. three more agents stepping down, just two days after two supervisors and another officer were forced out. all because of allegations of misconduct with prostitutes in colombia. days before president obama was due to arrive there. chuck grappling calling to expand the investigation to see if any involvement may have occurred with white house staff. specifically senator grassley wants to find out if anyone from the communication agency had any overnight guests that their hotel room or shared rooms at the hotel or other hotels in colombia. grassley wants to know, who would be reviewing these hotel records to ensure that sensitive information was not compromised by overnight guests. white house has said a couple times this week so far none of the people on the ground has been caught up in this scandal. i have no reason to believe. i do not know, otherwise, tha