And the people who came over on this boat(Mayflower).
didn't according to your liberal historical revisionism, come over on that boat, but sprang up from the ground in modern day Plymouth, Massachusetts.
There were no national borders at the time of the Mayflower arriving. There are, however, internationally recognized national borders now. As such, those entering without permission or right do so in violation of the sovereignty of the United States of America. That alone gives us every right to enforce our borders and deport any and all who enter this nation illegally.