One can hardly act surprised that Mr. Outgoing is not going to be at the inauguration of his successor this year. There have been surprisingly few comments about the LAST time that happened. So it is worth being explicit. The last such snub took place in March 1869, when Andrew Johnson left town ahead of the festivities for incoming President Ulysses S. Grant. Andrew Johnson (pictured here) and Donald Trump share a lot else for the history books, too. Each was impeached by the House during his first-and-only term in office. Each defeated the prosecutors of that impeachment in the Senate and completed his term. And now, we see that each has declined to stick around for the ceremony that would formally end that term. This means that Bill Clinton is the only impeached and tried President who did show up for his successor's inauguration, that of George W. Bush, in January 2001. And that situation was different. Clinton was impeached in his second term in office. So he se...