Rep. Darrell Issa (R-Calif.) heads the congressional committee that will investigate Sulaimon Brown's allegations.
Rep. Darrell Issa (R-Calif.), who heads the committee to run the investigation, says in a statement that his investigators have been unsuccessful in their attempts to interview key figures close to Mayor Vincent Gray, and because of that he doesn't have confidence the District government can get to the bottom of the allegations.
The mayor announced last week that D.C.'s Office of Campaign Finance would be investigating the allegations. Brown was fired from his position in the Department of Health Care Finance on Feb. 24.
Issa references Gray's former chief of staff, Gerri Mason Hall, to other figures named by Sulaimon Brown as taking part in the alleged quid-pro-quo scheme, including campaign chair Lorraine Green and campaign consultant Howard Brooks. Both have denied any wrongdoing.
A spokesperson for the House Oversight and Government Reform Committee says a hearing date has not been set.