The issue with those blocked payments is that the program was established to deal with an uneven distribution of unusually expensive customers. Insurance Compan

The issue with those blocked payments is that the program was established to deal with an uneven distribution of unusually expensive customers. Insurance Company A makes more than expected so it pays into the pool. Company B loses more than expected so it draws from the pool. Thinks were expected to even out overall. But what has happened is that all (or most) companies are losing money on the exchanges so there is no one to pay into the pool. Congressional Republicans have blocked funding the pool with government money because the pool wasn't supposed to cost money in the first place.