Trump wants to sign an executive order terminating citizenship for the children of unauthorized immigrants on Day 1 of his administration

This would presumably expose millions to deportation from the land where they were born. As Christian Farias noted in New York Magazine when Trump threatened to end birthright citizenship in 2018, this issue would certainly wind up in the courts, as it exceeds Trump’s authority as president and violates a constitutional right:

The President-elect has promised to halt the policy as soon as he gets into office, though such efforts would face steep legal hurdles.