When the president chose to not grant an exemption from the mandate that employer-provided insurance should include contraceptive coverage, some bishops called the decision an act of war on the church and religious freedom.
With due respect, I believe this overstated matters considerably. This is especially so, since the president responded promptly to begin discussions on how the ethical concerns of the church might be met more satisfactorily. In particular, the president proposed that no Catholic employer would be directly asked to supply contraceptive coverage; instead, that coverage would be provided by the employer's insurance company.
To a good many theologians, this worked well enough to avoid formal cooperation with evil, but left unanswered how the problem could be avoided where a Catholic employer did not use a third-party insurer, but was self-insured. Discussions continue, with some now suggesting that it might be possible to create a public entity by implementing regulation to offer the contraceptive benefit in this self-insured context in a way that similarly separates a Catholic employer.