What's the status of legal aliens who plan on becoming a citizen but have not yet taken the oath?
In either case, are one or the other, or both, subject to the jurisdiction of the United States yet?
Whether an illegal alien is "subject to the jurisdiction" of the US is unclear.
However, a legal alien who is a legal resident of a state is clearly under the jurisdiction of the United States. That would include Obama's father. His mother was a citizen. That means he was born in the United Wtates and under US jurisdiction, which makes him a natural born citizen.
Case closed.
The people who are bringing this case up before SCOTUS are no less delusional and stupid than those claiming McCain is not a natural born citizen, or those who claim Sarah Palin is not Trig's mother.
What's the status of legal aliens who plan on becoming a citizen but have not yet taken the oath?"
They are both subject to, unless they are diplomats, etc. I think that children of illegal alien La Raza (hostile occupying force) members are not citizens by birth, but that would be really tough to win.