The President also suggested he would put out an executive order redefining 'citizenship' and stripping people born in this country of citizenship if they were the children of illegal immigrants!!!
People who will be heartened by that don't realize that 'birthright citizenship' is part of the 14th Amendment to the constitution designed to grant citizenship to former slaves born in the US.
A President can't give an executive order to overturn an amendment to the Constitution.
If both houses of congress passed a bill to overturn the 14th amendment and the President signed it...that still couldn't overturn the 14th Amendment.
The only way to overturn an amendment to the constitution is to have a 'constitutional amendment' and here's what that requires: