At a tidy home in Chicago Lawn, an empty baby chair faces a small rectangular kitchen table. Plastic garlands and ornaments are still hung around the living room from the family’s first Christmas in the United States. The family of four — migrants from Venezuela just getting their footing in Chicago — had their lives suddenly altered in a fatal car crash Friday afternoon when their 11-month-old baby died. The family was coming home from an appointment with their lawyer around 3 p.m. when a car heading in the same direction struck them on southbound I-290. Yusmelis Gonzalez, 31, and their baby,…