Trump faces criticism over 'dangerous' Stephen Miller appointment as chief of staff

1. What happened

   According to a Guardian headline, Donald Trump faces criticism over his appointment of Stephen Miller as White House chief of staff, which critics have called 'dangerous'. The headline does not say who made these criticisms or what specific concerns they raised.

2. When it started

   The date of the appointment and of the criticism is not given in the material provided.

3. How it spread

   Only a Google News link to a Guardian headline was provided, so the article text, named critics and official statements could not be checked.

4. Why it matters

   The headline does not give reasons for the criticism. Readers should consult the full Guardian report for the specific arguments and any White House response.