I just spoke with the Treasury on the lending facility they brought for discussion for the future. Summing it up, if they decide to lend securities it will only be because there is a very dire situation in the market i.e. a security trading at a negative repo rate. If this were the case the Treasury would make the security available for lending. The Treasury does not want to get in the repo business only help if the situation is dire. They will let the negative repo rate help decide whether the issue should be made available for lending.