The Supreme Court and the Obama administration, already headed for a face-off in March over the constitutionality of the healthcare law, appear to be on another collision course over whether church-run schools, universities, hospitals and charities must provide free contraceptives to their students and employees.

The dispute stems from one of the more popular parts of the new healthcare law: its requirement that all health plans provide "preventive services" for free. That category includes vaccines and such routine screenings as cholesterol checkups and mammograms. Starting this year, it also includes coverage of birth control pills, IUDs and other contraceptives.

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