As The Arc celebrates Social Security’s 80th anniversary this August, we kick off the month by marking the 59th anniversary of Social Security Disability Insurance (SSDI). Signed into law on August 1, 1956 by President Dwight D. Eisenhower, SSDI insures nearly all American workers and their families in the event of life-changing disabilities. Without SSDI, millions of people with significant disabilities – including people with intellectual and developmental disabilities (I/DD) – would face financial dire straits and often unthinkable choices. Learn more about SSDI and the action that we need Congress to take to maintain this lifeline on The Arc’s blog and in a new edition of National Policy Matters, Social Security and SSI for People with I/DD and Their Families. This edition of National Policy Matters explores how Social Security, SSI and related health insurance under Medicare and Medicaid operate, the vital support they provide, and current policy proposals that may impact people with I/DD and their families.