Combine first 5 ingredients in a medium bowl; toss gently.
Combine jalapeño pepper and remaining 6 ingredients in a small saucepan; stir well with a whisk. Bring to a boil; reduce heat, and simmer, uncovered, 2 minutes or until sugar dissolves, stirring often. Pour over bean mixture; toss gently to coat. Cover and chill at least 8 hours. Serve salad with a slotted spoon.