1920s chief justice (4)
I believe the answer is:
taft
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">1920s chief justice</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for taft that I've seen before include "27th US president, William" , "US president, 1909-13" , "US President before Wilson" , "former President" , "27th President of the United States" .)