[nancybelowzero]

What do you mean "no one is stopping"? The "ones stopping" are lobbiests and their associated bribes.

[lotsofpulp]

They can try to influence, but they are not successful all the time. I would bet the American public does not have the stomach for government spending on risky trials that more often than not fail to result in a medicine.

I don’t think any government in the world does.