Over the past 12 years since the Affordable Care Act became law, individuals, business groups, and state officials who object to one or more of its provisions have filed a lengthy list of mostly unsuccessful lawsuits seeking to have part or all of it declared unconstitutional by the courts. The latest legal challenge involves the requirement that private health insurers cover without patient cost-sharing all evidence-based preventive services, defined as more than 100 services recommended by the Advisory Committee on Immunization Practices , the U.S. Preventive Services Task Force , Bright Futures , or the Women's Preventive Service Initiative . When I went to my family doctor last month and received screening tests for colorectal cancer, high blood pressure, and cholesterol, these tests were all covered under the ACA's preventive services mandate. When I take my kids to receive their school-required vaccinations, those shots are fully covered too. The same goes for the cost...