Trump promised at his inaugural address that "national unity" would return. But much of this week has seen the returning president continue to pummel out-of-power foes. He called former Republican Rep. Liz Cheney, of Wyoming, a "crying lunatic."

President Donald Trump has signed an executive order to end birthright citizenship for children born to unauthorized immigrants.

Legal experts said the president’s executive order would upend precedent and is unlikely to pass constitutional muster.