user: Question: how many pick# does the Chivas USA  mls team have
Columns: ['Pick #', 'MLS team', 'Player', 'Position', 'Affiliation']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Vancouver Whitecaps FC', '* Omar Salgado', 'Forward', 'United States U-20']
SQL:

assistant: SELECT COUNT("Pick #") FROM "Table" WHERE "MLS team" = 'Chivas USA';