CREATE TABLE table_203_308 (id NUMBER, "athlete" CLOB, "nation" CLOB, "olympics" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

in total , how many athlete medal leaders are from the united states ?
SELECT COUNT("athlete") FROM table_203_308 WHERE "nation" = 'united states'
SELECT COUNT("athlete") FROM "table_203_308" WHERE "nation" = 'united states'