Sen. John McCain and his staff have been adamant for days that his upcoming overseas trip to Britain, France and Israel is not political. /snip ...Apparently, though, there will still be room for fundraising. McCain's campaign has sent out an invitation for a March 20 luncheon at Spencer House -- the neo-classical home built for an ancestor of Diana, the late Princess of Wales -- "by kind permission of Lord Rothschild OM GBE and the Hon. Nathaniel Rothschild." The price to attend is $1000 to $2,300. And the dress code for the event? "Lounge suits" -- British for business...