Among the more controversial chapters in Suicide of a Superpower, my book published last fall, was the one titled, “The End of White America.”

It dealt with the demographic decline of the white majority and what it portends for education, the U.S. economy, politics and national unity.

That book and chapter proved the proximate cause of my departure from MSNBC, where the network president declared that subjects such as these are inappropriate for “the national dialogue.”

Apparently, the mainstream media are reassessing that.

For, in rare unanimity, The New York Times, The Washington Post and USA Today all led yesterday with the same story.

“Whites Account for Under Half of Births in U.S.,” blared the Times headline. “Minority Babies Majority in U.S.,” echoed the Post. “Minorities Are Now a Majority of Births,” proclaimed USA Today.

The USA Today story continued, “The nation’s growing diversity has huge implications for education, economics and politics.”

Huge is right.

Not only are whites declining as a share of the population, they are declining in real terms. Between 2010 and 2011, the number of births to white women fell 10 percent. The median age of white Americans, now 43 and rising, means that half of all white women have moved past the age that they are ever likely to bear more children.

White America is a dying tribe.

What do these statistics mean politically? Almost surely the end of the Republican Party as a national governing institution.

Republicans now depend on the vanishing majority for fully 90 percent of their votes in presidential elections, while the Democratic Party wins 60 to 70 percent of the Asian and Hispanic vote and 90 to 95 percent of the black vote.

The Democratic base is growing inexorably, while the Republican base is shriveling.

Already, California, Illinois and New York are lost. The GOP has not carried any of the three in five presidential elections. When Texas—where whites are a minority and a declining share of the population—tips, how does the GOP put together an electoral majority?

Western states like Colorado, Nevada, New Mexico and Arizona, which Republican nominees like Richard Nixon and Ronald Reagan swept almost every time they ran, are becoming problematic for the party.

Thus the GOP refrain: We must work harder to win over Hispanics.

Undeniably true. But how does the GOP appeal to them?