There is nothing remotely anti-Catholic in these emails.  They are the unvarnished remarks of people who were not writing for publication -- but they reflect a realistic and factual analysis of political realities: that the leadership of the Catholic Church in the United States (not the church itself, and not the vast majority of Catholics) has often associated itself with neo-conservative politics and Republican politicians, at least since the late 1980s.  Some bishops have been egregiously active in promoting Republican politicians, and these have diminished the authority and credibility of all of the bishops.  For Democratic candidates to fail to take note of these facts and account for them would be political malpractice.