There have been some calls to change the 14th Amendment provision that any child born in the U.S. is automatically a citizen. Frankly, this provision has always seemed odd to me, that a child whose mother crosses the border to give birth should be a citizen just for being born north of the Rio Grande, even if the mother is here illegally.
Upon looking into this, it is apparent that the 14th Amendment provision in question was designed to overturn the Dred Scott decision and give citizenship to former slaves, and to children of former slaves. There has never (apparently) been any judicial opinion extending this to the children of those here illegally, although this extension has been assumed.
I think liberals would be wise to not toss this proposed amendment into the scrap heap with all the other looney proposals the right wing has come up with over the years, like the balanced budget amendment, outlawing abortion, etc. This one actually makes sense, and would correct what is obviously an unintended flaw in our Constitution.