Why the ACLU is suing over Catholic groups and abortions for unauthorized immigrants

... the ACLU filed a Freedom of Information Act lawsuit to find out whether teenagers who are being housed in Catholic Charities–operated facilities (after being apprehended as unaccompanied migrants) have access to contraception and abortion...
http://www.vox.com/2015/4/6/8354759/aclu-catholic-charities-abortion-immigrants