Investigation into firings of U.S. attorneys reaches the White House

A congressional investigation into the firings of eight U.S. attorneys reached into the White House on Friday, with Democrats saying that they'll call in President Bush's former counsel Harriet Miers and other unidentified White House officials for interviews with the House Judiciary Committee.

Lawmakers have been asking whether the federal prosecutors' offices have become tainted by partisan politics. Until Friday, the official inquiry had ended with the Justice Department.

The decision to extend the inquiry to Bush's inner circle suggests that lawmakers believe there may have been some level of coordination of the firings from inside the White House last December.