Netanyahu and Politically-Correct Language

I spotted this in a GPO press release communicated from the Prime Minister's Office:

Schedule for PM Netanyahu's Address

(Communicated by the Prime Minister's Media Adviser)

Prime Minister Benjamin Netanyahu will, tomorrow (Tuesday, 3 March 2015), address a joint session of the US Congress. The schedule of events is as follows (all times US Eastern Standard Time):

...10:25 – Meet with US House of Representatives Speaker John Boehner (R-OH). Speaker Boehner will present PM Netanyahu with a head sculpture of Winston Churchill with an inscription of the PM's name and the date of his address. 

"Head sculpture"? 

I was taught that the term is a "bust".

"bust [buhst]
noun
1.
a sculptured, painted, drawn, or engraved representation of the upper part of the human figure, especially a portrait sculpture showing only the head and shoulders of the subject"

^