This liberal article goes halfway to the truth of causation, IMHO.http://www.slate.com/blogs/moneybox/2015/03/16/our_kids_culture_helped_kill_the_two_parent_family_and_liberals_shouldn.html
"Yes, Culture Helped Kill the Two-Parent Family. And Liberals Shouldn’t Be Afraid to Admit It."
They suggest more liberal policies as the solution.
Causation is a little more simple than this deep article suggests. Government took over the role of the husband and father. And would like to take over the role of the mother too!
The solution, in law of holes - when you realize you are in one, is generally to stop digging.