CREATE TABLE table_26451 ("Name" TEXT, "Nationality" TEXT, "Position" TEXT, "Appearances" FLOAT, "Starts" FLOAT, "Minutes" FLOAT, "Goals" FLOAT)

What is the position of the player who is from the United States and has 30 minutes?
SELECT "Position" FROM table_26451 WHERE "Nationality" = 'United States' AND "Minutes" = '30'
SELECT "Position" FROM "table_26451" WHERE "Minutes" = '30' AND "Nationality" = 'United States'