Scotsmen supporting Independent American statesman? (9)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

IAN (the usual Scottish man’s name in crosswords) twice (therefore Scotsmen plural), after (below, in a down clue = supporting) IND (Ind. = abbreviation for independent). According to Wikipedia, residents of the US state of Indiana are called Hoosiers, though the origin of the term is disputed, but before 2017 “Indianian” was the official term. I would have guessed “Indianan” which seems more logical, but what do I know?