While the White House is mum about the 300 or so lucky invitees to President Obama's first state dinner tonight, top Republican lawmakers apparently didn't make the A-list. Among others, the president didn't invite his 2008 campaign rival, Sen. John McCain of Arizona, even though Obama the candidate pledged a post-partisan presidency. ... Most senators will be back in their home states during the holiday break, and few Republicans want to return to Washington for a party packed with Democrats. Senate Minority Leader Mitch McConnell received an invitation but decided to skip the dinner. Some top Democrats also found themselves...