California officially removes immigration status as a barrier to health care, making all low-income undocumented residents eligible for Medi-Cal in 2024. On Monday, the state opens its Medi-Cal eligibility to undocumented adults 26 to 49 — the last remaining age group to be included. The expansion is expected to provide full coverage for roughly 750,000 residents and will likely lead to the largest drop in the rate of uninsured Californians in a decade. It is estimated to cost about $2.6 billion annually. “It’s life changing for many of these folks, if not most,” said Rachel Linn Gish, directo…