Family Tree Dna Jewish

How does the Israeli government for Jews to separate from non-Jews?
Many Jews are immigrating to Israel under their right to return each year. But I do not think the Israeli government accepts all the claims are Jews at the airport. Moreover, the emergence Jews today is said to be different from their ancestors (Perhaps due to repeated marriages). Some Jews look totally European and Ethiopian Jews look African. Any candidate for Israeli citizenship must pass a DNA test to prove that the blood Jewsh? There must show a certificate of Jewish identity (issued by the Jewish community) or your own family tree to the agent Immigration? So how on earth can the Israeli government to distinguish Jews from non-Jews? I refer to the citizenship of the applicants of Israel, and not those with Israeli citizenship living in Israel. Well, I want serious answers only. And I have no race prejudices against the Jewish people.
Of Indeed, most of the time the Israeli government accepts all around the airport which claims to be a Jew. All Ethiopians and Russians who claimed to be Jews were admitted and received citizenship. Most of them had no official documentation to "prove" that they were Jews, and many Russians, especially not had knowledge of the Jewish religion. To my knowledge there is no such thing as a blood test that can "prove" that you're Jewish. Note Although the Law of Return gives every person claiming to be a Jew the right to Israeli citizenship, is no guarantee that they are Jews. In Israel, the Orthodox rabbi of control that is considered as a Jew, and many people have immigrated to Israel under the Law of Return observe, for example, can not marry in Israel, because they can not prove they are Jewish. This makes all problems. For example, the Orthodox rabbinate refuses to certify the conversions by Reform and Conservative rabbis, so these people are allowed to immigrate to Israel, but not marry. And recently, the huge wave of immigration from Russia gave Israel its first group of anti-Semitic skinheads! He was also a great scandal to the Jews of Ethiopia, to be flown en masse to Israel to see the rabbi refused to testify Jewish without conversion (at the end accepted a symbolic "conversion, rather than a complete.)
OTH AbrahamsDNA