Mortgage rates inched lower Tuesday as concerns about the pace of global economic growth and uncertainty about whether Greece will remain in the European Union helped pushed bond yields lower. In the U.S., Factory Orders fell by 0.7%, below expectations. The Institute for Supply Management services index declined to 56.2, a bit below forecast. Readings above 50.0 indicate expansion in the services sector of the economy. Stocks moved modestly higher. No other key data will be released today.