Debacle: The woman who got a shoutout from President Obama last month for her fan letter for ObamaCare finds out her exchange quote was a computer mistake and she doesn't qualify for a tax credit after all. In one of his famous photo-ops in the Rose Garden last Oct. 21, with an array of touted beneficiaries of the Affordable Care Act behind him, President Obama read a letter from Jessica Sanford of Federal Way, Wash., to explain why the Affordable Care Act, with all its rollout flaws, was still needed. The letter told a sad tale of a grateful single...