MORNING ADDITION
Credit: LA Times Crossword
Sylvia Bursztyn and Barry Tunick

The answers to the clues below will be familiar phrases - but with a twist.

1. Chaucer's favorite Mexican dish
2. Decision on Star Trek
3. Unprincipled past
4. Secret information about a US President

HINT:
The answer involves two letters as suggested by the title.

Answer:

Each answer is a familiar phrase - with the addition of AM:

1. CANTERBURY TAMALES
2. TO BEAM OR NOT TO BEAM
3. AMORAL HISTORY
4. CLASSIFIED ADAMS