The Tea Party - those lovers of the Constitution - have been ready to trash the 14th Amendment's right to birthright citizenship lest they think it might have the impact of increasing immigration. But the data shows birth tourism, one of the key concerns opponents of the 14th Amendment tout, is quite rare. According to a report in USA Today:

While birth tourism is real, there is little proof the practice is widespread, even in border states such as Arizona, where last year less than 2 percent of babies were born to non-resident mothers.

In 2008, slightly more than 7,400 children were born in the U.S. to non-citizens who said they lived outside the country, according to the National Center for Health Statistics. The figure was the most recent available. The number includes children born to women studying at U.S. universities, international visitors as well as so-called birth tourists.

While births to illegally present immigrants is significant, let's at least put aside the canard that people are coming over in droves to have their children in US hospitals.