EXPLAINER: How health care for vets became fight in Congress

Veterans, military family members and advocates are joined by activist Jon Stewart as they call for Senate Republicans to change their votes on a bill designed to help millions of veterans exposed to toxic substances during their military service, at the Capitol in Washington, Monday, Aug. 1, 2021. A bill that enhances health care and disability benefits for millions of veterans exposed to toxic burn pits has hit a snag in the Senate. (AP Photo/J. Scott Applewhite)

EXPLAINER: How health care for vets became fight in Congress