The flood of underage -- and nonunderage -- illegal immigrants from Central America coming across the border in Texas is, to paraphrase a former Obama administration official, a "man-caused disaster." The man who caused it, more than anyone else, is Barack Obama.

One question I am asked while on tour for my new book, "The Greatest Comeback," on the resurrection of Richard Nixon, is:

Does Nixon's rise, from crushing defeats in 1960 and 1962, and the debacle his party suffered in 1964, to capturing the White House and beginning a string of five victories in six presidential elections, have relevance for today's GOP?

And so Benghazi fades, the VA story fades, the missing plane, the missing girls in Africa, Sgt. Andrew Tahmooressi, IRS, the list goes on, all fade from the headlines in this attention-deficit, 24/7 news cycle.