I think if the Obamacare mandate comes due, I will write a nice letter explaining that I do not owe it because I am an illegal resident of the United States.
Undocumented aliens are exempt.
And if the IRS disputes that I will sue because they don't determine the legality of residency.
I'm pretty sure established law precludes any agency but the DHS from holding administrative procedures regarding immigration status.
I have a due process right to have my residency considered only by the appropriate authority.
And barring such a consideration, the IRS has no basis to deny my asserted illegal residency.

And if I lose and am branded a natural born citizen, I will sue because the 14th Amendment guarantees equal protection regardless of national origin.

It may take the rest of my life, but, that's what the Democrats want from me anyhow.