Rates inched lower Tuesday as increased concerns about Europe boosted mortgage-backed securities. Political opposition in Germany to aid programs for weaker EU countries, a weak Spanish bond auction, and questions about Greek reforms overshadowed better than expected economic data in the U.S. This morning, the July Case-Shiller 20-city home price index rose 0.4% from June, and was 1.2% higher than one year ago. Consumer Confidence jumped to 70.3, well above the consensus forecast of 63.0. Results from today’s 2-year Treasury auction will be released at 1:00 PM.