Prepare rice according to package directions: bring 3 cups of water to boil. Add salt and rice, remove from heat. Cover and allow to sit for at least 5 minutes.
Prepare dressing in serving bowl. Combine lime juice, olive oil, salt, cilantro. jalapeno, and red onion in large bowl, whisk to combine.
Add corn and black beans to dressing, mix. Add rice and mix again.