About 340,000 of the 4.3 million babies born in the United States in 2008 — or 8 percent — had at least one parent who was an illegal immigrant, according to a study published Wednesday by the Pew Hispanic Center, a nonpartisan research group in Washington.

There are lies, damn lies, and there are statistics.

Here is the lie:

“They come here to drop a child,” Mr. Graham said.

This conclusion is not supported by a study which shows:

More than half (of mothers in the country illegally) had been in the country for five years or more.

But drawing any conclusion from the study is impossible because:

Some researchers noted that the Pew figures did not identify families where both parents were illegal immigrants.

Come on! You obviously had that data! How many of those 8% have at least one parent who is American? Don't you think that data point is relevant to the ensuing policy discussion you desired the study to provoke!?

Nonpartisan my ass.