WASHINGTON - Democratic presidential candidate John Kerry (news - web sites) called Wednesday for deeper tax cuts for the middle class than proposed by President Bush (news - web sites) and described his Republican critics as "the most crooked ... lying group I've ever seen." The chairman of Bush's re-election campaign called on Kerry to apologize "for this negative attack." After urging labor leaders to support his campaign, Kerry met with one-time rival Howard Dean (news - web sites) to discuss an endorsement and what role the former Vermont governor might play in his campaign. Hoping to win over Dean,...