I have most of my savings invested in American companies and i´m not selling a single share, things look pretty grim right now, everything is red and nobody seems sure when we will hit the bottom but remember its pretty much 100% sure the markets will recover so aslong as you don´t sell a single share you will get your money back.
As a matter in fact i´m taking this as a chance to buy at discount price and i´m seriously consider selling some of my other assets to buy more stock right now.
Everytime the market crashes you have people saying this is the time everything is finally going to crumble and that it´s the end but they always turn out to be wrong, there is no reason things will work differentely this time.
I´m not American but i´m certain the value in American companies and economy is still intact, the market is responding to fear and uncertaintity but when that inevitably goes away the green will be back stronger than ever.