The moment they enter the world, they will be what their parents are not: U.S. citizens.
Such is their birthright, granted by the 14th Amendment to an estimated 340,000 babies born annually to undocumented immigrants.
But in the marathon fight over immigration control, that 143-year-old constitutional guarantee has become the latest target and the delivery room the new front. The pejorative anchor babies already is in the lexicon.
"Once a child is born here, the parents make the argument that they should be allowed to stay as that child's guardian. They are using that child as an anchor [to] play on our heartstrings," said Pennsylvania Rep. Daryl Metcalfe, a Butler County Republican who has built a national reputation as a crusader against what he calls "illegal alien invaders."
Immigrant advocates dismiss his contention as myth, and point to a recent study that found that undocumented immigrants generally "come for work and to join family members." The Washington-based nonprofit Immigration Policy Center concluded that "they do not come specifically to give birth" and game the immigration system.
Such assertions have not tempered efforts by immigration-control proponents to effectively do away with "birthright citizenship" for illegal immigrants' children.
On the federal level, two Republican senators, David Vitter of Louisiana and Rand Paul of Kentucky, want to accomplish it by amending the Constitution to allow automatic citizenship only if a child has at least one parent who is a citizen, a legal permanent resident, or an active-duty soldier.