An “anchor baby” is the child of parents who are not U.S. citizens. The baby, if born in the United States, nevertheless becomes a U.S. citizen and is an “anchor” for bringing his or her parents legally into the country.
 
The families of “anchor babies” are usually Democrats, and conservative radio host Rush Limbaugh said on August 20, 2015:
 
“If we can’t call ‘em ‘anchor babies,’ what do we call them?  Anchor Democrats?  ‘Cause that’s how the Democrats are looking at them all.  Or if you’re a member of the Republican elite, Chamber of Commerce, ‘anchor cheap labor’?”
 
“Undocumented Democrat” is a similar term.
   
 
Wikipedia: Anchor baby
Anchor baby is a pejorative term for a child born in the U.S. to a foreign national mother who is not lawfully admitted for permanent residence. The term is generally used as a derogatory reference to the supposed role of the child, who automatically qualifies as an American citizen under jus soli and the rights guaranteed in the 14th Amendment and can thus act as a sponsor for other family members. The term is also often used in the context of the debate over illegal immigration to the United States to refer to children of illegal immigrants, but may be used for the child of any immigrant. A similar term, “passport baby”, has been used in Canada for children born through so-called “maternity” or “birth tourism”.
 
There is a popular misconception that the child’s U.S. citizenship status legally helps the child’s parents and siblings to quickly reclassify their visa status (or lack thereof) and to place them on a fast pathway to acquire lawful permanent residence and eventually United States citizenship. Current U.S. federal law prevents anyone under the age of 21 from being able to petition for their non-citizen parent to be lawfully admitted into the United States for permanent residence. At best, the child’s family would need to wait for 21 years before being able to use their child’s US citizenship to modify their immigration status, and is thus, unhelpful for immigration purposes.
   
RushLimbaugh.com
There’s Nothing in the Constitution About Anchor Babies: Donald Trump’s Latest Fight Against the Drive-By Media
August 20, 2015
RUSH:
(...)
If we can’t call ‘em “anchor babies,” what do we call them?  Anchor Democrats?  ‘Cause that’s how the Democrats are looking at them all.  Or if you’re a member of the Republican elite, Chamber of Commerce, “anchor cheap labor”?  If they’re not anchor babies, I don’t know what to call them.  This is just… It’s amazing to see all of this explode the way it is.  And it’s creating all this talk about immigration, illegal immigration.  For the first time it’s out there, folks.  It’s out there on our terms.
 
Twitter
Daily Rushbo
‏@DailyRushbo
#LIMBAUGH: Should We Call #AnchorBabies ‘Anchor Democrats’? http://dailyrushbo.com/limbaugh-should-we-call-anchor-babies-anchor-democrats/ … AUDIO
11:42 AM - 20 Aug 2015
 
Twitter
Ryan Jones
‏@RyanGRAA Ryan Jones Retweeted The Hill
Anchor Democrat
#BetterTermThanAnchorBaby
Ryan Jones added,
Embedded image permalink
The Hill @thehill
Jeb on “anchor babies”: “You give me a better term and I’ll use it” http://hill.cm/garHoJX  View translation
5:15 PM - 20 Aug 2015
 
YouTube
RUSH: Should We Call ‘Anchor Babies’ ‘Anchor Democrats’?
Daily Rushbo
Published on Aug 28, 2015
Find More @ http://www.dailyrushbo.com
 
The Weekly Standard
No, Ted Cruz Did Not Invent the Term ‘Undocumented Democrat’ (Updated)
cc: New York Times, NPR
1:59 PM, DEC 21, 2015 | By ETHAN EPSTEIN
(...)
And by the way, when Cruz perhaps takes it a step further and starts referring to “Anchor Democrats,” know that he didn’t invent that term either.