A recent study on data from a dating app found all women except black women were most drawn to white men, and men of all races (with one notable exception) prefer Asian women. iStockphoto hide caption

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Health and Human Services Secretary Kathleen Sebelius visits navigators helping enroll people on HealthCare.gov. Lynne Sladky/AP hide caption

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Rep. Darrell Issa, R-Calif. (right) reacts to Rep. Gerry Connolly, D-Va., at a May hearing. The two are co-authors of a federal IT reform bill. J. Scott Applewhite/AP hide caption

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A slide from McKinsey & Co.'s outside review of HealthCare.gov, in the spring. House Energy and Commerce Committee hide caption

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Henry Chao, the project manager of HealthCare.gov, is sworn in to testify before the House Oversight Committee on Wednesday. J. Scott Applewhite/AP hide caption

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Co-workers at Denver's Galvanize, a tech hub in Colorado's capital. Elise Hu/NPR hide caption

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Todd Park, the U.S. chief technology officer, testifies before the House oversight committee about problems implementing the health care program. J. Scott Applewhite/AP hide caption

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