“Its historically dominant group is on its way to becoming a political minority”
And when did we vote to be a minority in our own country?
When middle class American whites decided to stop having children. We voted by not raising enough kids in two-parent households, and by ceding the raising of the few children we do have to day care centers instead of households.
By doing that, we sentenced ourselves to eventual minority status. It's really that simple. No politician in the GOP would dare to stand up today and declare out loud "Stay together and have more babies to win in 2050!" yet that's exactly the message that needs to go out.