First Abraham Lincoln said this:

We have been the recipients of the choicest bounties of Heaven. We have been preserved, these many years, in peace and prosperity. We have grown in numbers, wealth, and power as no other nation has ever grown.  But we have forgotten God.  We have forgotten the gracious hand which preserved us in peace, and multiplied and enriched and strengthened us; and have vainly imagined, in the deceitfulness of our hearts, that all these blessings were produced by some superior wisdom and virtue of our own.  Intoxicated with unbroken success, we have become too self-sufficient to feel the necessity of redeeming and preserving grace, too proud to pray to the God that made us!  It behooves us, then, to humble ourselves before the offended Power, to confess our national sins, and to pray for clemency and forgiveness.
— Abraham Lincoln, April 30, 1863

Then James Garfield said this later on: 

"If the next centennial does not find us a great nation ... it will be because those who represent the enterprise, the culture, and the morality of the nation do not aid in controlling the political forces."

— President James Garfield, 1876

I'm thinking maybe they were onto something.  I believe God never takes away first without warning the people.  The Jews know this firsthand.  But do we?   We have ignored many wise voices of the past.  Are we smarter than they? The National Day of Prayer is next week.  I think it behooves us to get on our knees and pray.  Pray for our nation, our leaders and our military.