As president I would suspend the writ writ of habeascorpus
as President Lincoln did.
During the Civil War, President Lincoln suspended the writ of habeascorpus three times: first, on April 27, 1861, again on September 24, 1862, ...
I would deport illegals deep into Mexico.
And who will stop me as I am the commander of the Armed forces?
As many have tried to inform you - it is not feasible to revoke people's citizenship once they have it. It's too late. Perhaps you meant Sarah might try to repeal the law which would impact future illegals becoming citizens? Perhaps that was your point. But clearly no one is going to revoke citizenship or round up citizens and throw them out of the country.