“Obama made better coverage for children a centerpiece of his health care remake, but it turns out the letter of the law provided a less-than-complete guarantee that kids with health problems would not be shut out of coverage. Under the new law, insurance companies still would be able to refuse new coverage to children because of a pre-existing medical problem, said Karen Lightfoot, spokeswoman for the House Energy and Commerce Committee, one of the main congressional panels that wrote the bill Obama signed into law Tuesday.”