On XXXX XXXX 2015, I was issued a mortgage modification from USbank with an interest rate of 4.95 %. The mortgage is a XXXX XXXX mortgage. According to the XXXX XXXX website, banks who service XXXX XXXX loans must use their standard interest rate on all modifications. On XXXX XXXX, 2015, the XXXX XXXX rate was 4.125 %. A month prior to that it was $ 4.0 %. Why is there a discrepancy between what what XXXX XXXX is issuing and what my Usbank ( the servicer ) is charging me? Many thanks. 
