Grassley: Russians 'famous' for using prostitutes as spies

In an interview with Iowa reporters, Grassley argued the actions of Secret Service agents, who are accused of bringing prostitutes back to their hotel rooms, could have compromised national security.

“We’re looking at something that is very, very serious when national security might not be protected properly,” Grassley told Radio Iowa on Tuesday. “Who knows who might be using prostitutes? The Russians are famous for that to get information out of us. You want to know that the president is protected.”

Grassley has been pressing the White House for more information on the controversy, including whether any White House staffers engaged in improper behavior.

Read more on The Hill's DEFCON Hill blog.