Many of you, anyway, based on Twitter and Facebook comments posted after I argued immigration with Ann Coulter on my TV show.

«Move into an illegal-heavy neighborhood and get back to us!»

«Another libertarian who believes illegal invaders are good for our country. Madness.»

Madness?

Clearly, lots of Americans are mad about immigration. But we libertarians believe that people trapped in horrible countries deserve a chance at a better life and that free trade in labor, not just products, is a good thing.

Why would I think that when my Facebook «fans» tell me things like: «Most immigrants, legal & illegal, get food stamps & welfare»?

Because that’s not true.

«Almost all welfare programs in the U.S. are limited to legal immigrants living here at least five years,» points out Cato Institute policy analyst Alex Nowrasteh.

Of course, some immigrants cheat, many hospitals lose money treating undocumented people and immigrants’ kids get free public schooling. On average, the lifetime fiscal impact of the average immigrant is negative $3,000, says the National Research Council.

But the NRC goes on to say that descendants of the immigrant make a positive fiscal contribution of $83,000.

That’s a big win for America.

Even illegal immigration helps delay the bankruptcy of Social Security and Medicare. Young illegal workers pay into the system — but most don’t collect. «Medicare and Social Security—the biggest welfare programs,» says Nowrasteh. «Immigrants subsidize those programs massively.»

Health policy journal Health Affairs says in 2009 immigrants contributed $13.8 billion more to the Medicare Trust Fund than they collected in benefits. In the same year, native-born Americans took out $30.9 billion more than they paid in.

Beyond the financial arguments, let’s not forget that immigrants bring us new ideas. They invent more things than native-born Americans. Immigrants gave us Google, YouTube, blenders, ATMs, basketball, shopping malls, blue jeans, hot dogs and more.

Ann Coulter told me, «that was then, those were European immigrants.» But now we admit «brown people» who are turning America into «a Third World hellhole.»

Coulter says that the new immigrants don’t assimilate the way Europeans did. Maybe that’s true, but I pointed out that immigrants from Nigeria, Jamaica and Ghana are more likely to be employed than native-born Americans and twice as likely to get a college degree. «I don’t believe it,» answered Coulter.

She also argues that America admits too many immigrants, but how many is too many? Thirteen percent of America’s population is now foreign born (down from 15 percent in 1915). Immigrants make up 27 percent of the population in Switzerland and Australia.