they better do more than just "warn"

Congress warns Bush over Iran. “With President Bush adopting a more combative tone toward Iran and Syria, senior Democrats are considering legislation that would require the president to seek congressional sanction for military action against those countries,” CQ reports. “You will see a resolution saying they can’t go into Iran without congressional authorization,” said Rep. John Murtha (D-PA), chairman of the House Appropriations Defense Subcommittee.

(Think Progress)