CASA | 5,481 followers on LinkedIn. Largest immigrant advocacy organization in the Mid-Atlantic, with 115,000+ lifetime members in MD, VA, PA, & nationwide. | CASA’s mission is to create a more just society by building power and improving the quality of life in working class and immigrant communities. Our vision is a future where we stand in our own power, our families live free from discrimination and fear, and our diverse communities thrive as we work with our partners to achieve full human rights for all.