As President Bush prepares for his second term, Democrats in Washington and around the country are organizing for a year of confrontation and resistance, saying they are determined to block Bush's major initiatives and thereby deny him the mandate he has claimed from his reelection victory last November. The Democrats' mood and posture represent a contrast to that of four years ago, after Bush's disputed victory over Al Gore. Then, despite anger and bitterness over how the 2000 election ended, Democrats were tentative and initially open to Bush's calls for bipartisan cooperation. Today, despite Bush's clear win over Sen. John...