Grab your crayons and exercise your creative side Dr. Jill Biden is the First Lady of the United States of America, and she's defining that role in a way no other First Lady has before her. A mother, grandmother, and lifelong educator, Dr. Biden has worked tirelessly to raise awareness about women's issues and issues that affect families. Although she calls community colleges "one of America's best-kept secrets," it's no secret that she's Joe Biden's best-known advocate and supporter.