Sparks fly between Cox and McCain

Christopher Cox, the chairman of the Securities and Exchange Commission (SEC), and John McCain, the Republican president candidate, have clashed over McCain's comment that he would fire Cox if he were president.

In recent days McCain has stepped up his attack on the American regulatory authorities and their senior officials. The Republican nominee for November's presidential election this week poured scorn on the SEC for having "kept in place trading rules that let speculators and hedge funds