Note that the two words in the answer are anagrams of each other.
Ex: Highest saucepan = top pot.

-1. Illicitly purloins bunch of wool from winter hat. 6,6 letters

-2. Member of the upper house of the US Congress commits betrayal of trust. 7,7

3. Garments for mourning? 5,5 s,r s---r r----

-4. Cattle boat. 3'1,4 c,s

-5. Clever sculpture. 6,6 a,s

-6. Dirty den. 5,5 d,s d---y s---y

-7. Looked further in. 6,6 p,d

-8. Macbeth's weapon is notched. 6,6 r,d

-9. Every pain. 4,4 e,a

-10. Serious sea birds. 5,5 s,t

2. Senator / treason - Good morning Curly

Bernie

Thanks Bernie.

1. steals tassel

Good one michele.

7. peered deeper

9 - each ache

Merci.

10. stern terns

Thanks Marian.

5. astute statue

Thanks ob.

8. ragged dagger

4. cow's scow

Thanks.

6. Dusty study

Bernie

Have a nice day Bernie.

3. sober robes

Merci Joan.