Democrats demand ‘proof’ from Bush Daschle, Pelosi sharply assail president on eve of State of the Union speechWASHINGTON, Jan. 27 — On the eve of President Bush’s State of the Union address, congressional Democratic leaders challenged the president to show “proof to the world” that Iraq has weapons of mass destruction. Jan. 26 — Presidential aides indicate that Bush’s State of the Union address will deal with a growing federal deficit and will require cuts to some programs. NBC’s Joe Johns reports. IN WHAT WAS billed as a “pre-buttal” to Bush’s address to Congress and the nation Tuesday at 9...