Why are all the major cable TV news channels located in New York City, right in Manhattan?

I live in the midwest. Why can't there be cable TV news channels from the mid west, but not Chicago? Wouldn't that be a better way to communicate with people who are far from New York City?

Is the New York Times finally catching up to the failures of the Obama programs?

Page 1A even tells how Obama's foreclosure measures made things worse, not better. Each day they seem to reveal something new about Obama's mistakes.