Hi, Can anyone with an economic understanding help me with a couple of obvious question about US mortages? It's understood that rising bond yields affect the mortage rates - why is this, can't the banks lend, with a margin at a rate that reflects the Feds minimal interest rate? In OZ/NZ it seems that the banks lower their rates in step with the lowering rates from the RBA/RBNZ, why is this not more the case in the US? Secondly, its understood that rising bond yields are detrimental to the stock market, but exactly why is that - is it the rising cost of borrowing, or the better return expected from bonds, or the economic affects from foreclosures or something else or all of these aspects. Any help with these questions is greatly appreciated.