Mortgage rates were little changed Tuesday following the release of mixed economic data and ahead of Fed Chairwoman Janet Yellen’s congressional testimony. This morning, June Retail Sales rose 0.2%, far below expectations, but May figures were revised higher. The Empire State regional manufacturing index jumped to 25.6, well above the consensus forecast of 15.0. Readings above zero indicate expansion in manufacturing in the region. June Import Prices increased by a tame 0.1%. Fed Chairwoman Yellen will be testifying before Congress today and tomorrow beginning at 10:00 AM.