Minnesota Attorney General Skip Humphrey may be investigating Major League Baseball. Commissioner Bud Selig and Twins owner Carl Pohlad say they've received questionnaires from Humphrey's office that indicate he's interested in challenging Baseball's 76-year-old anti-trust-exemption. The exemption allows baseball to operate as a monopoly, and many of baseball's critics say it makes it easier for teams to pressure taxpayers for financial help, as the Twins did last year.