CREATE TABLE table_3654 ("Pick #" FLOAT, "Player" TEXT, "Position" TEXT, "Nationality" TEXT, "NHL team" TEXT, "College/junior/club team" TEXT)

What is the nhl team for the position centre and nationality united states?
SELECT "NHL team" FROM table_3654 WHERE "Position" = 'Centre' AND "Nationality" = 'United States'
SELECT "NHL team" FROM "table_3654" WHERE "Nationality" = 'United States' AND "Position" = 'Centre'