在英國的恐怖襲擊事件之后，美國國土安全部部長邁克爾·切多夫在接受幾家媒體采訪時表示將加強反恐安全管理
Homeland Security Secretary Michael Chertoff made appearances on several television talk shows. He told ABC's This Week program there is no indication of a linkage between the events in Britain and any specific attacks on the United States. "We do not have, at this point, specific, [wv]cred…