This isn’t bailout related. For some odd reason the Treasury added extra 10 year bonds to their last auction at the last minute. It was unexpected extra supply and the yields went up. Fixed rate mortgages are tied to the 10 year bond. Some speculate that the Treasury wanted to make bonds less attractive as a safe haven so more money would go elsewhere. In any case it looks like a stupid move.
When t-bills are paying a better return wouldn’t more people be buying them?
also, a lot of investors went into Treasuries of all maturities for security during the stock market decline, and have started selling out of them to put money elsewhere. this temporarily moves rates upward.