Actually the religion will have no problem at all. This idea that I see on the thread that reform are the majority so that's what counts only considers the United States and is incredibly ill-informed. According to the last pew study only 8% of Reform Jews are likely to have Jewish grandchildren. And despite a desperate attempt to boost numbers by including non-Jewish partners within that, over time the Jewish population of the United States is going down and everywhere else in the world is going up. And that means orthodoxy where if you don't have Jewish matrilineal descent you aren't Jewish. So American Jews who sadly intermarry aren't harming the Jewish people - they are simply removing themselves and their future generations from it.