I do not know the cost; but THIS 
has cost us ~ 3,300 Future American Citizens EVERY day for the last 40+ years!
This is a direct consequence of the 9/11 moslem attack on our country.
1. Moslems attack.
2. Bush went to war to defend the US and pacify the enemy. Leftists saw it as discriminatory against all moslems. The division starts.
3. In reaction, zero-accomplishment part-term senator from Illinois with a good tan becomes POTUS. He had the most radical leftist positions of any US senator. He flagrantly violates the constitution, moves the country radically to the left, pays our enemies (e.g. Iran) to destroy us, and works tirelessly to subvert the 2016 US presidential election.
4. Eight years of the racist mullatto president thoroughly sets back race relations by 50 years or more. He stirs up minority resentment and they start killing cops all over the land.
The moslems and bin Laden have succeeded beyond their wildest dreams tearing the country apart and destroying it, right down to our constitutional roots. This destruction is FAR worse than the $1 trillion and 3,000 souls that 9/11 cost us.
We’d be peacefully watching Sunday NFL games without politics and racial division if moslems had not attacked us.
I like your insight. This dysfunction and toxicity is radioactive fallout from ObamaNation. I think soon, this too will pass and change towards better things.
But we’re not where we are because of the Muslims or someone else. We’re where we are because somehow we’ve let the Delusional Lying Left take our country to the brink, Obama giving the last big shove to the brink.
Our destiny is in OUR hands, not in the Muslim’s hands. We the People must stand up as we did to elect Trump and begin re-commandeering our country and recover our Free Constitutional Republic.
I do not know the cost; but THIS has cost us ~ 3,300 Future American Citizens EVERY day for the last 40+ years!