CREATE TABLE table_name_44 (college_junior_club_team__league_ VARCHAR, nationality VARCHAR, round VARCHAR)

What league is from the United States and a round smaller than 12.
SELECT college_junior_club_team__league_ FROM table_name_44 WHERE nationality = "united states" AND round < 12
SELECT "college_junior_club_team__league_" FROM "table_name_44" WHERE "nationality" = "united states" AND "round" < 12