Simplify the following text for a Grade 9 native English-speaking person.
Original: Club Deportivo Chivas USA is an American professional soccer club based in the Los Angeles suburb of Carson , California that competes in Major League Soccer ( MLS ) , the top professional soccer league in the United States of America and Canada .
Simplified: C.D. Chivas USA is an American football ( soccer ) team that plays in Major League Soccer in Carson , California .