The best catch there is

Bibi Netanyahu has endorsed Avigdor Leiberman's call for passing a loyalty test to be a full Israeli citizen. As Badger points out, this bears an eerie resemblance to a 1935 Nazi Germany law that required citizens to have a 'citizen certificate'. And there is also a fictional precedent that comes to mind.

Of course Lieberman is betting that Israeli Jews will think that only Israeli Arabs will fit the bill, but there's no assurance of that, since Lieberman's party doesn't think so:

Lieberman is not talking about us, say most citizens. Yet he is. Lieberman is talking about anyone who disagrees with his perception of the State and its path. Please read Yisrael Beiteinu's platform; it doesn't hide a thing. In the "Citizenship and Equality" clause, under the headline "stricter attitude to subversion," it says: "We shall act to ban parties or bodies whose words or acts constitute incitement against the State of Israel as a Jewish Zionist State and undermine its existence."

Next, watch Yisrael Beiteinu's election ads on TV, which feature examples of disloyalty, followed by a voiceover ominously: "No citizenship without loyalty." And what is the example provided? Protesters against the operation in Gaza holding up signs near the fence of the Hebrew University in Jerusalem. The conclusion is that those protesting against government decisions are disloyal. Loud and clear. And where do we mark the loyalty threshold? Balad? Hadash? Meretz? Or perhaps Kadima, which is engaging in talks on returning the Golan Heights?

Sounds like in Catch-22, where Captain Black knew that the only way to determine of someone is loyal is to have them swear an oath of loyalty, preferably often and whenever they interact with the state. If someone refuses to swear, they're obviously disloyal, and if they seem disloyal, it is enough to not let them take the oath to confirm their disloyalty.

The tendency of Israel to embrace its own brand of fascism thus gets another shot in the arm. It is a very slippery slope. And as Badger points out, it is seemingly unnoticed here in the US.