Throughout the ages, the Jewish people have learnt what borderline Jews, however officially Jewish, the Erev Rav, only persecuted the Jews, infiltrated the community and reported the others, although never respected the halacha and persuaded the old ones to leave Judaism. Easy conversions have traumatized us. That's why it takes a decade to become a true Jew nowadays. And it should not change.
U.S. Democratic Senator Merkley airs support for Iran nuclear deal (Reuters)
from the article: Reform and Conservative Jews fuming ahead of Knesset vote on conversions