It has to do with Obama's oppressive HHS mandate and how it forces everyone to pay for contraceptives, abortions, and other things that are morally repugnant. Hobby Lobby, EWTN, and Little Sisters of the Poor are among those who have been trying to fight it in court. When the HHS mandate first came out, 100% of U.S. bishops wrote a letter in protest of it. And in 2012, the bishops organized the first "Fortnight for Freedom" to protest the mandate. This was unprecedented in U.S. history. Since that time, the Fortnight for Freedom has become an annual event because Obama continues to ignore the complaints of Catholics. I'm surprised that you haven't heard about it.
Here's a link to information about it:
http://www.usccb.org/issues-and-action/religious-liberty/fortnight-for-freedom/
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