The head of Israel’s Immigration Police told the Knesset this week that nearly 100,000 illegal aliens had left the country during an 18-month deportation effort. Interestingly, only a third of them were formally deported, while the rest “left of their own accord.” This is what happens when the governments decide to start actually enforcing immigration law: some people are arrested and thrown out, but many more get the message that it’s time to go, and deport themselves. If only our own immigration police had the same political support as their counterparts in Israel.