Birthright citizenship vow shows Trump doubling down on immigration gambit
![Birthright citizenship vow shows Trump doubling down on immigration gambit](https://thehill.com/sites/default/files/styles/promo/public/trumpdonald_102618upi3_lead.jpg?itok=X-k0JRAP)
President Trump is doubling down on his hard-line immigration stance in the final days before the midterm elections, revisiting a tried-and-tested plan he hopes will fire up his core supporters and get them to the polls on Election Day.Trump has...