Donald Trump's push to end birthright citizenship faces a massive legal roadblock: the 1898 Supreme Court ruling in United States v. Wong Kim Ark. This precedent firmly establishes that any child born on U.S. soil is a citizen, regardless of their parents' immigration status, leaving Trump's plan likely doomed to fail.
https://www.alternet.org/msn-uk/birthright-citizenship-trump/
That's not quite how the Supreme Court works in the US system.
The SCOTUS doesn't *do* or undo anything outside of the judicial branch. It only writes opinions, for what they're worth.
It was intentionally deprived of actual power on its own, and it's vital to understand that.
SCOTUS can't change the Constitution, for example. If it rules in opposition to the Constitution, then the ruling is invalid; it doesn't change it.
If the other branches want to act on an invalid ruling and the general public wants to stand behind it, well, we'll do what we do.
@TomWellborn