Current hopelessness unending in White House (5)

I believe the answer is:

igloo

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'white house' is the definition.
(an igloo is made of snow)

I don't understand the rest of the clue.

(Other definitions for igloo that I've seen before include "Snow-house" , "home in the cold" , "cold accommodation" , "Dome-shaped Eskimo house" , "An eskimo's ice-house" .)

I've seen this clue in The Times.

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