Medicaid, the state-federal health insurance program for people with low incomes or disabilities, touches millions of Americans and has become deeply woven into the U.S. health care system.

Republicans are weighing billions of dollars in cuts to Medicaid, threatening health care coverage for some of the 80 million U.S. adults and children enrolled in the safety net program.

Eighty million U.S. adults and children are currently enrolled in the nearly-free health care coverage offered to the poorest Americans.