Why is Ted Cruz the only U.S. senator attending Mandela memorial?

◼ The memorial service for Nelson Mandela is a big deal. "We're now on 91 Heads of State & Gov confirmed plus 10 former Heads of State, 86 Heads of delegations & 75 Eminent Persons," tweeted South African government spokesman Clayson Monyela on Monday. - Byron York/Washington Examiner @ByronYork

From the United States Congress, House Speaker John Boehner appointed a 23-member delegation, led by Illinois Republican Rep. Aaron Schock and dominated by members of the Congressional Black Caucus, all Democrats. Their plane departed early Monday morning.

But what about the U.S. Senate? Senators could have joined the representatives on the congressional plane. But exactly one -- one -- senator will be at the Mandela memorial: Texas Republican Ted Cruz. No member of the majority Democratic or minority Republican leadership will attend. And not the Senate's only black Democrat, Cory Booker, or the Senate's only black Republican, Tim Scott....

Says a spokesman: "Sen. Cruz believes that once-in-a-generation historical leaders, whatever their strengths/weaknesses, who accomplish extraordinary things, should be recognized and celebrated. And he personally wants to be part of demonstrating the recognition in American of the transforming power of the end of apartheid."