Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_19 ( round INTEGER, nationality VARCHAR, college_junior_club_team__league_ VARCHAR )

### Question ###
Which Round has a Nationality of united states, and a College/Junior/Club Team (League) of breck school (ushs)?

### Accurate SQL ###

SELECT MIN(round) FROM table_name_19 WHERE nationality = "united states" AND college_junior_club_team__league_ = "breck school (ushs)"