 Langford, among the senators confronting Secret Service Director Kimberly Cheadle during the Republican National Convention in Milwaukee, Langford says the senators asked Cheadle if she would agree to be in a public hearing next week. Critics have called on Cheadle to resign following last weekend's shooting at a campaign rally in Pennsylvania. I'm Jacqueline Scott. I'm Eric Lycum. This is the ONN, the Oklahoma News Network.