What do the following clues have in common?

1. Up for auction

2. In surgery

3. Pressured 

4. Secretive

5. Inconspicuous

6. Not feeling well

7. Where nothing's new

8. Driving while drugged or intoxicated 

9. With the help, support, and protection of

10. Operating as part of a larger organization (with "of") 

Answer:

 

Each clue can be answer with a phrase beginning with UNDER THE:

 

1. Under the hammer

2. Under the knife

3. Under the gun

4. Under the table

5. Under the radar

6. Under the weather

7. Under the sun

8. Under the influence 

9. Under the auspices

10. Under the umbrella (of)