mercantile exchange is under scrutiny. eamon javers has the latest on that story from washington. >> reporter: "the wall street journal" reporting this morning that at the cme, some high-frequency traders have figured out that they can get as much as a ten millisecond advantage over their competitors and get a heads up on price information and that's something that's got a lot of people scratching their heads and wondering whether or not there's an unfair advantage here for high-frequency traders. it's an issue that i talked to bart chilton from the cftc about a little while ago. he said one thing he would like to see at least for a start is for high-frequency traders to register with the cftc. take a listen. >> the second largest trader, by volume, at the chicago mercantile exchange, in the past, and maybe still today, is a high-frequency trader located in prague. now, if i want to get the books and records, because i think something potentially nefarious has gone on, i'm not going...