A fiery on-air showdown has erupted on Sunrise, with Housing Minister Clare O’Neill and Nationals Senate Leader Bridget McKenzie clashing over who is to blame for rising interest rates following the Reserve Bank’s decision to lift the cash rate by 0.25 per cent. The heated exchange came as families brace for higher mortgage repayments, with O’Neill conceding the rate rise would be “very unwelcome around kitchen tables around the country”.