CREATE TABLE table_11790 ("Name" TEXT, "Appointed/Elected" TEXT, "Term expires" TEXT, "Appointing Governor" TEXT, "Governor's Party Affiliation" TEXT)

Which person has an expiring term of December 31, 2020, and has Terry Branstad as the appointing governor?
SELECT "Name" FROM table_11790 WHERE "Term expires" = 'december 31, 2020' AND "Appointing Governor" = 'terry branstad'
SELECT "Name" FROM "table_11790" WHERE "Appointing Governor" = 'terry branstad' AND "Term expires" = 'december 31, 2020'