Even before Francis has published his ideas, his opponents have been issuing their rebuttals. Among the most outspoken are conservative Republicans in the US Congress, which the Pope will address on his first visit to America in September Republican Catholics in the United States are usually supremely relaxed about pending papal documents, which, so far as they need to be noticed at all, can generally be relied upon to support their socially conservative agenda. But Rick Santorum, conservative Catholic, former senator for Pennsylvania and aspiring US presidential candidate, makes no secret of his anxiety about the encyclical Pope Francis is releasing next week. He warns that the Pope is “not credible” on the issue of climate science. “I think that we are probably better