L. Michael Luttig, a retired federal judge and leading conservative who advised Vice President Mike Pence ahead of the Jan. 6 attack on the U.S. Capitol, told CBS News on Tuesday that he is willing to publicly testify about that experience and his alarm over Republican attempts to overturn the 2020 presidential election. "If invited by the Congress, I would of course be glad to testify," Luttig said in a statement. Luttig played a pivotal role in helping Pence and his chief counsel in the vice president's office, Greg Jacob, and outside lawyer Richard Cullen, to forge a legal and...