An evangelical college is joining Catholic groups in suing the Obama administration over the so-called contraception mandate. 

Illinois-based Wheaton College announced Wednesday morning that it had joined The Catholic University of America in filing suit before District of Columbia federal court.   

The wave of lawsuits has so far been dominated by Catholic organizations. After the Supreme Court upheld most of the federal health care overhaul last month, those groups vowed to continue their legal challenge against the requirement that employers provide access to contraceptive care. 

The announcement Wednesday marks the first time an evangelical group has joined that effort. 

"In this case, we recognize we have common cause with the Catholic University of America and other Catholic institutions in defending religious liberty," Wheaton College President Philip Graham Ryken said on a conference call.